SAHAYOG UGC-DAE CONSORTIUM for SCIENTIFIC RESEARCH (An autonomous Institution of the University Grants Commission) ———————————————————————————————————————-Vol.20 No.2 UGC-DAE CSR Bulletin January 2012 Online at www.csr.res.in

——————————————————————————————————————— Annual Day 2011 The Annual day of UGC-DAE Consortium for Scientific Research (CSR) was celebrated on December 13, 2011. Prof. A. K. Sood, President, Indian Academy of Sciences was the Chief Guest. The function started with Dr. P. Chaddah, Director, UGCDAE CSR, welcoming the guests. He informed the achievements of the Consortium such as utilization and development of various facilities and its research activities, specifically the role of Consortium in providing the access to the big science facilities of the country to the University researchers. He mentioned that a total of about 900 researchers have utilized the facilities of Consortium in the last year. He mentioned about the inauguration and the commissioning of state of the art research facilities at Kalpakkam Node. He then introduced the Chief Guest to the gathering, highlighting his scientific achievements, recognitions and awards.

Prof. Sood, in his address, commended the achievement of CSR in providing access to state of art research facilities to the university researchers and mentioned that the CSR has become a role-model in the country for such Consortia. He spoke on “Incredible Graphene!”, where he discussed emerging applications based on the Graphene and many fascinating physical properties of Graphene translating into new devices. He also discussed his research work and elaborated on the use of Raman spectroscopy in the fabrication and characterization of devices based on Graphene such as field effect transistor, resistive switching elements etc. The alternative analogue materials to Graphene such as layered MoS2 were briefly discussed at the end. After the Chief Guest’s address, the prestigious Prof. R. Srinivasan Award for Low Temperature Physics/Cryogenics was awarded to Shri. P.K. Kush, RRCAT, Indore for the Indigenous Development of Country’s first Helium Liquefier. The CSR award for Scientific Excellence was presented to Dr. Rajeev Rawat of the Indore centre for his immense contribution towards the mandate of the Consortium and carrying out internationally impact making research work. Prof. Ajay Gupta, CentreDirector, UGC DAE CSR, Indore centre, proposed vote of thanks.

The function was attended by members of Scientific Advisory Committee, scientists and academicians from RRCAT, DAVV and other institutions and scientists and students of CSR. The address of Prof. Sood was followed by a poster session highlighting the research activities / facilities of the three Centres at Indore, Kolkata, Mumbai and the Kalpakkam Node and lectures by the awardees in the afternoon session. The day ended with a classical musical program of Sarod Vadan by Shri. Sachin Patwardhan, disciple of Ustad Amjad Ali Khan.

Theme Meeting on Utilization of National Facility for Neutron Beam Research A Theme Meeting on the Utilization of National Facility for Neutron Beam Research (NFNBR) was held during October 1718, 2011 at the Anushaktinagar campus of BARC. This meeting was organized jointly by UGC-DAE CSR Mumbai Centre and Solid State Physics Division (SSPD), BARC and was partially funded by BRNS, DAE. At this meeting, about 25 faculty members from various universities and research institutes across the country were invited to participate and also asked to give brief presentations on how they intend to use neutron scattering facilities available at NFNBR, BARC for their research work. The meeting was inaugurated by Dr. P. Chaddah, Director, UGC-DAE CSR and Dr. S.L. Chaplot, Head, SSPD, BARC gave his introductory remarks. Dr. V. Siruguri, Centre-Director, UGC-DAE CSR Mumbai Centre gave a brief overview of the theme meeting and hoped that it would enhance the utilization of NFNBR in the form of detailed research proposals from the participants. The enthusiasm of the participants was such that some of them had already submitted formal proposals in advance and could make specific presentations for evaluation. Dr. Chaplot gave an overview of the NFNBR followed by talks on the characteristics and capabilities of the various spectrometers at the NFNBR by Drs. P.D. Babu (CSR Mumbai Centre), A. Das, S.M. Yusuf, P.S.R. Krishna, R. Chitra, V.K. Aswal and D. Sen (all from SSPD, BARC). A visit to the NFNBR, Dhruva reactor, BARC was arranged and the participants could interact first-hand with all the instrument scientists and discuss various possibilities of cooperation. On the whole, the participants were highly appreciative of the meeting format and expressed their willingness to submit proposals for neutron scattering experiments.

SCHOOL CUM WORKSHOP ON MAGNETIC PHASE TRANSITIONS AND TRANSFORMATIONS A school cum workshop on Magnetic Phase transitions and Transformations was organized by UGC-DAE CSR Kolkata Centre and Physics department , Jadavpur University Kolkata during August 03-09, 2011 at Jadavpur University main campus. A large number of students and researchers (about 96) from different universities and institutions have participated in the school cum workshop. There were about 45 outstation participants. The school (from 03 to 07 August) was followed by a two day (08 and 09 August) national level workshop on the same topic.

The school was inaugurated by Prof. P. N. Ghosh, the honourable vice chancellor of Jadavpur University. Distinguished scientists working in the low temperature high magnetic field arena were present in the inaugural function. Twenty six lectures were delivered by different experts during five days of the school. The keynote address was delivered by Prof. A. K. Raychaudhuri, Director S. N. Bose National Centre of Basic Sciences, Kolkata. The first technical talk was delivered by Prof. Praveen Chaddah, Director, UGC-DAE CSR, Indore followed by talks by Prof. A. K. Majumdar, Dr. S.B. Roy and Prof. Ajay Gupta. Both theoretical and experimental aspects of magnetic phase transitions and transformations were covered in the lectures given in the school. Theoretical aspects were discussed by Prof. Abhijit Mookerjee, Prof. Indrani Bose, Prof. G. P. Das, Prof. Sulava Bhattacharyya and Dr. Tanusree Saha Dasgupta. The experimental aspects were covered by Prof. B. G. Ghosh, Prof. B. N. Dev, Prof. K. Ghosh Roy, Dr. V. Ganeshan, Dr. Alok Banerjee, Dr. S. K. Bandopadhyay, Prof. S. K. Dey, Dr. P. K. Mukhopadhyay, Dr. K. Mondal , Dr. S. Giri, Dr. S.Majumdar , Dr. V.R. Reddy and Dr. C.Mitra. The subsequent two day workshop was inaugurated by Prof. Subrata Pal, the honourable vice chancellor of Burdwan University. The keynote address was given by Dr. D. Chakravorty. The invited speakers were Prof. R. Ranganathan, Dr. A. Mitra, Dr. T. K. Nath, Dr. P. K. Chakrabarti, Dr. I. Das, Dr. S. Bandopadhyay, Dr. A. Burman, Dr. S. Mukherjee , Dr. C. Biswas and Dr. S. Chatterjee. The workshop ended with distribution of participation certificates to the participants. The certificates were given by Prof Subhas Chandra Bhattacharyya the honourable Dean of Science of Jadavpur University.

National Workshop on Nuclear Physics using Ion Beams from Cyclotrons at VECC A workshop titled “Nuclear Physics using Ion Beams from Cyclotrons at VECC” was organized jointly by the Kolkata Centre of the UGC-DAE Consortium for Scientific Research and Variable Energy Cyclotron Centre (VECC), at the VECC campus in Kolkata during August 24-26, 2011. The workshop was primarily intended for the faculty members and the research scholars from the universities and institutes across the country, planning to use the current and upcoming facilities at VECC. It is noteworthy to mention that the beam tests from country’s first Superconducting Cyclotron (SCC) at VECC has reached an advanced stage. The SCC is expected to deliver a large variety of beams over a wide range of energies, thus ushering new frontiers in the domain of nuclear physics research in the country. In addition, the room temperature cyclotron at VECC is currently operational, following an extensive up-gradation exercise, delivering proton and alpha beams. Several state-of-the-art detection facilities are being commissioned and campaigns using these facilities are being planned in near future. The workshop was intended to address the physics problems and the required methodology that can be pursued at the aforesaid facilities.

The workshop was attended by about 100 participants including 22 Research Scholars and 14 faculty members from outside Kolkata. The three day workshop comprised of eleven technical sessions. The inaugural session of the workshop commenced with the welcome address by Dr. A. K. Sinha, Centre Director, UGC-DAE CSR, Kolkata Centre followed by the Presidential address by Dr. R. K. Bhandari, Director, VECC. This was followed by an address by the guest of honour, Prof. L. Chaturvedi, Vice-Chancellor, Guru Ghasidas University, who has been a user of the Cyclotron since its early inception, and shared with the audience his experience and expectations from this facility which has been the mother of all nuclear physics endeavours in the country. Dr. D. K. Srivastava, Head, Physics Group, VECC delivered a talk “Nuclear Physics : The Interest Continues”, wherein after a brief description to the evolution and growth of nuclear physics, he highlighted some of the emerging problems in this domain. Dr. A. Chatterjee, Head, Nuclear Physics Division, BARC gave an Experimental Overview of the existing facilities, available in the country, which set the tone for Workshop. The subsequent sessions of the workshop over three days was addressed by distinguished speakers from the nuclear physics community that led the audience through a rich spectrum of possible nuclear physics research using the VECC facilities. The presentations were followed by intense discussions with inputs from the VECC group on the feasibility of the proposed research. A tour of the VECC SCC and room temperature cyclotron was organized to help introduce the participants to the said facilities. The salient feature of the invited presentations was that they were largely delivered by young researchers who are currently developing these large scale facilities. Some of the recent cyclotron users presented their results before the audience. It is expected that this workshop would help nucleate a collaboration between the University and the VECC, allowing for the optimal use of these facilities by the community.

New Instruments 7-Tesla MPMS SQUID- Vibrating Sample Magnetometer: 30

A 7-Tesla MPMS SQUID- Vibrating Sample Magnetometer (VSM) is installed towards the end of 2011 for faster and accurate dc-magnetization measurements of thin films. In the SQUID VSM measurement technique, the sample vibrates at a known frequency and SQUID detection system is employed for signal detection. The magnetic field charging rate can be varied in the range of 4 Oe/sec to 700 Oe/sec. The samples can be cooled from room temperature to a stable 1.8 K in 30 minutes.

M (emu)

As deposited

(a)

20

Oxygen Annealed

10 0

TiO2-d

-10 -20 -30 -5000

-2500

0

2500

5000

H (Oe)

-6

Cr/Pt multilayer

4.5x10

5.0x10

M (emu)

M(emu)

(b) 0.0

-1.0x10

-2000

3.6x10

-1000

0

H (Oe)

1000

2000

-4

TV = 121 K

0.0

(c)

-4

0

150 T (K)

Fe3O4/Si

-5.0x10

-6

-4

M (emu)

1.0x10

-4

-70000

300

# 558 data points 104 min +/- 7 Tesla (5 Quads)

-35000 0 35000 Magnetic Field (Oe)

70000

Fig. (a): Magnetization (M) versus magnetic field (H) plot at room temperature of as deposited and oxygen annealed TiO2-d films grown by pulsed laser deposition technique on (001) LaAlO3 substrates [J. Phys. Cond. Matt. 24 056004 (2012)]. Fig. (b): M vs H plot at room temperature for Cr/Pt multilayer grown on Si substrate. Fig. (c): M vs H plot for Fe3O4 film grown on Si (111) substrate in ±7 Tesla range. It contains #558 data points recorded in ~104 minutes. Inset shows M versus temperature plot for the measured at 100 Oe in ZFC mode. The Verwey transition is observed at TV = 121 K. Ram Janay Chaudhary ([email protected])

Secondary Ion Mass emission Spectroscopy (SIMS): Secondary Ion Mass emission Spectroscopy (SIMS) is a versatile technique for depth profiling. It is used for; parts per billion sensitivity, coatings technology, imaging chemical distributions, fuel cell development, depth profiling, photovoltaics, 3D chemical mapping, metallurgy, diffusion and dopant analysis, pharmaceuticals and isotopic analysis. Hiden SIMS Workstation (see Fig. 1) installed at our centre during August 1-5, 2011. The SIMS workstation is equipped with two ion guns - the IG20 gas ion that can be used with oxygen or other gases and the IG-5C Cs ion gun. Both guns can be operated in the energy range of 0.5 to 5 keV and the minimum beam spot size with gas gun is about 120 micron while that with Cs ion gun is about 50 micron. At the heart of the whole system lies the MAXIM quadrupole SIMS/SNMS analyser that is responsible for the excellent sensitivity of the instrument, it can trace mass from 1 amu to 1000 amu and can give maximum counts up to 10 7. Data collection is done using the Hiden MASsoft software suite. The instrument is pumped with a turbo molecular pump (TMP) and three other TMP with differential pumping. A load lock system makes it possible to introduce samples in the analysis chamber without exposing the system to the atmosphere. Sample holder can hold up to 10 samples at a time. Typical size of required samples is 5mm×5mm. Cesium Gun MAXIM Quadrupole Gas Gun(O2,Ar etc.) mass Analyzer

Load Lock

Operating Computers

Sample Chamber

Figure 1:Photograph of SIMS system installed at UGC-DAE CSR Indore.

Fig. 2: SIMS depth profile of [Fe-Ti-N (100 nm)/57Fe-Ti-15N/Fe-Ti-N(100nm)] sample deposited on Si substrate obtained using oxygen ion source operating at 5 keV, 400 nA.

Fig. 3: SIMS depth profile of [Fe-N (100 nm)/57Fe-15N/Fe-N(100nm)] sample deposited on Si substrate obtained using oxygen ion source operating at 2 keV, 100 nA.

Fig. 4: SIMS imaging of a standard sample obtained using Cs ion source operating at 5 keV, 1 nA. Bright spots corresponding to Al can be seen clearly.

Fig. 2 shows SIMS depth profile of a multilayer with Fe/57Fe contrast. Chemical imagining of surface can also be performed using oxygen ion source operating at 5 keV, 400 nA. Fig. 3 shows SIMS depth profile of [Fe-N (100 nm)/57Fe-15N/FeN(100nm)] sample deposited on Si substrate obtained using oxygen ion source operating at 2 keV, 100 nA. Such trilayer structures are often needed for probing diffusion of a tracer layer. Another powerful feature of SIMS is mass imaging. Fig. 4 shows SIMS image of a standard sample where Al matrix was coated on a Si wafer. The measurement was performed using Cs ion source operating at 5 keV, 1 nA. Here bright spots corresponding to Al can be seen clearly. Mukul Gupta ([email protected])

Foreign Visits by Faculty and Students of CSR: S No 1

Name S. M. Amir

Place visited Prague, Czech Republic

Date July 17-22, 2011

2 3 4

Dr. S.R. Barman Sanjay Singh Prof. R. Nath

ILL, Grenoble, France ILL, Grenoble, France Montepellier, France

Aug. 1 – Aug. 5, 2011 Aug. 30 – Sept. 3, 2011 Aug. 27 – 31, 2011

5

Dr. S.D. Kaushik

ILL, Grenoble, France

Aug. 29 to Sept. 5, 2011

6

Dr. V. Siruguri

ILL, Grenoble, France

Aug. 30 to Sept. 5, 2011

7

ILL, Grenoble, France

Aug. 30 to Sept. 3, 2011

8

Dr. Sudhindra Rayaprol Prof. Ajay Gupta

ESRF, Grenoble, France

Sept. 4-20, 2011

9

Dr. Mukul Gupta

PSI, Switzerland

November 20-30, 2011

10

S. M. Amir

PSI, Switzerland

11 12

K V Sarathlal Dr. S Kavita

Elettra. Italy Nashville, USA

October 15-December 8, 2011 Oct. 22-31 Oct. 30-Nov. 4, 2011

Akhil Tayal

Oak Ridge National Lab, USA PSI, Switzerland

13

Nov. 4- 9, 2011 November 23-29, 2011

Purpose To attend 5th European Conference on Neutron Scattering. To perform experiments To perform experiments To attend 14th International Symposium on Electrets (ISE 14). To perform neutron diffraction experiments on D7 and D20 spectrometers To perform polarized neutron diffraction experiments To perform neutron diffraction experiments on D7 and D20 spectrometers To perform experiments on Nuclear Resonance beamline. Neutron reflectivity experiments Indo-Swiss Joint Research Project To perform beamtime experiments To attend 58th AVS Annual International Symposium and Exhibition 2011. To perform Neutron reflectivity experiments Neutron reflectivity experiments

Talks by CSR faculty / Students: 1.

2. 3. 4. 5.

6. 7. 8.

9. 10. 11.

12. 13.

Thin film growth for spintronics application by Dr. D.M. Phase at National Workshop on “Nanotechnology: Upshots in Interdisciplinary Research” organized by IPS Academy,Indore sponsored by Council of Scientific & Industrial Research, New Delhi during August 2– 6, 2011. Growth of single crystalline -Fe2O3 nanowires on pure Fe by Dr. T. Shripathi at National Conference on “Advancements in Convergence of Technologies” (NCACT-2011), Amity University, Haryana on September 9, 2011. Electron Spectroscopy for Chemical Analysis, Part I: Applications by Dr. T. Shripathi at Sardar Patel University, Anand, Gujarat on September 22, 2011. Electron Spectroscopy for Chemical Analysis, Part II: Basics by Dr. T. Shripathi at Sardar Patel University, Anand, Gujarat on September 23, 2011. Electronic depiction of magnetic origin in undoped and Fe doped TiO 2-d epitaxial thin films by Dr. Ram Janay Chaudhary, at National Conference on Condensed Matter and Materials Physics (CMMP-2011) held at Department of Physics, Govt. M.L.B Girl’s P.G. Autonomous College Bhopal (M.P.) during October 13-14, 2011. Nanorippled Si(100) surface as template for growing magnetic thin films by Prof. Ajay Gupta, at conference on 'Nanostructuring by ion beam’ Allahabad university, October 17-19, 2011 X-ray study of the interfaces in magnetic multilayers by Prof. Ajay Gupta, at Symposium on Frontiers of Physics, University of Hyderabad, October 28-29, 2011 Magnetic, electrical and magneto-transport properties of degenerate semiconducting Ti1-xFexO2-d epitaxial films by Dr. Ram Janay Chaudhary, at DAE-BRNS 6th National Symposium on Pulsed Laser Deposition of Thin Films and Nanostructured Materials (PLD-2011) held at Materials Research Centre (MRC), IISc, Bengaluru during November 09-11, 2011. X-ray study of the interfaces in magnetic multilayers by Prof. Ajay Gupta, at “Thin Film Science & Technology Symposium”, Bhabha Atomic Research Centre, Mumbai, November 09-12, 2011 Nanoscale Atomic Diffusion in Thin Films and Multilayers Studied Using X-ray Techniques by Prof. Ajay Gupta at theme meeting on “Diffusion, Mass Transfer and its Consequences in Materials,” IGCAR, Kalpakkam, November 24-26, 2011 Diffusion in thin films and study on the formation of L1 0 phase due to interdiffusion in Fe/Pt multilayer thin films by Dr.V.R.Reddy at “Structure and Thermodynamics of Emerging Materials (STEM)” – theme meeting on Diffusion, Mass Transfer and its Consequences in Materials” held at IGCAR during November 24-26, 2011. Probing magnetic transitions in rare-earth intermetallics and oxides with in-field neutron diffraction by Dr. V. Siruguri, Invited talk at 40th National Seminar on Crystallography, Osmania University, Hyderabad, November 26-28, 2011. Fun with Physics by Dr. J.V. Joshi at IAPT Lec-Dem series at various colleges in Kolhapur, Sangli and Gadhinglaj, Maharashtra, December 1-3, 2011.

14. Dielectric Spectroscopy-Basic Principles and Applications by Dr.S.K.Deshpande at the DAE-BRNS National Workshop on Materials Chemistry (Functional Materials), BARC, Mumbai, December 7-8, 2011. 15. Electron Spectroscopy for Chemical Analysis by Dr. T. Shripathi at 3-day seminar on “Future Oriented Techniques and Prospects in Chemical Sciences” (FOTPCS-2011) held at IES, IPS Academy Indore from December 15 -17, 2011. 16. Magnetic field induced transtion in ferromagnetic shape memory alloys by Dr. Archana Lakhani at Pondicherry University on December 16, 2011. 17. Glass like arrested states in doped Mn2Sb by Dr. R. Rawat at National Conference on Recent Trends in Material Science-2011, held at Bhalerao Science College, Saoner, Nagpur on December 17, 2011.

New Appointments: Dr. Rajarshi Raut joined CSR in August, 2011 as Scientist-D. After completing M. Sc. (Physics) from University of Calcutta in the year 2001, he joined Saha Institute of Nuclear Physics for pursuing his Doctoral studies. His Doctoral thesis pertained to the nuclear structure studies in the vicinity of N=82 shell closure. He was awarded Ph.D. degree in 2009. Thereafter he joined the Triangle Universities Nuclear Laboratory & Department of Physics, Duke University, Durham, North Carolina, USA, as a Post-Doctoral Research Associate. His Post-Doctoral research was on the crosssection measurement of neutron and gamma induced reactions of interests in few body physics, nuclear astrophysics and nuclear applications. Presently, he has been posted at the Kolkata Centre of the Consortium.

Mr Layanta Behera joined CSR Indore Centre as Scientific Assistant – B during October 2011.

Mr. Sushil K Sharma joined CSR Indore Centre as Attendant during November 2011.

Awards Dr. Sudhindra Rayaprol, Scientist-E, CSR Mumbai Centre:  N. S. Satyamurthy Memorial Award in Physics for Young Scientists for the year 2010, Indian Physics Association.  Young Achiever Award, 56th DAE-SSPS-2011, SRM University, Kattankulathur Campus, Chennai, Dec 19-23, 2011. Dr. Rajeev Rawat, Scientist-E, CSR Indore Centre:  Received CSR award for Scientific Excellence, 2011

Awards (Users): 

Mr. Devendra Tiwari, Charotar University of Science and Technology (CHARUSAT) Changa, Anand District Gujarat received the best poster award at the 56th DAE-SSPS-2011, SRM University, Kattankulathur Campus, Chennai, Dec 19-23, 2011.

PhD Award: 

Mr. Amit Khare obtained his Ph. D. Degree award from Department of Physics, Barkatullah University (BU), Bhopal under joint supervision of Prof. S. P. Sanyal (BU) and Dr. R. J. Choudhary (UGC DAE CSR, Indore). His Thesis title was “Study of Structural, Transport and Magnetic Properties of Some Magnetic Oxide Compounds”.

Edited by: Dr. T. Shripathi ([email protected])