Designation: Associate Professor
Department: Physics
Type of Appointment: Regular
Email Address: efremdesa@carmelcollegegoa.org
Educational Qualifications: M.Sc. Physics (Electronics) 1984 University of Bombay, M.Phil. Physics (Solid State Physics) 1993 Goa University, Ph.D. Physics (Solid State Physics) 2004 Goa University
Years of Teaching Experience: 32 years
Subjects Taught: Physics
Areas of Interest: Electronics, Solid State Physics
Research Papers Published/Presented (Paper title, Publication Name/Conference Name, page number, volume, month and year):
1. R.B.Prabhu, J.B.C. Efrem Desa and S.N.Bhatia
Resistivity and Thermopower of MnTexSe 1-x.
Solid State Physics (India) Volume 37C (1994) 114 Pg 143,
Proceedings of the 37th DAE Solid State Physics Symposium. (Bhabha Atomic Research Center, Mumbai, India ) Organized by Board of Research in Nuclear Sciences, Department of Atomic Energy, Govt. of India
2. R.B.Prabhu, V.N.KamatDalal, J.B.C. Efrem Desa and S.N. Bhatia
Resistivity and Thermopower of the Antiferromagnetic System MnTexSe1-x
Solid State Communication, Vol 104 565 (1997) ISSN 0038-1098 IF 1.554
Published by ELSEVIER ( This is an international Journal)
3 . J.B.C. Efrem D’Sa, K.R. Priolkar, A.Das. R.B.Prabhu, P.R.Sarode. V.N. KamatDalal and S.K. Paranjpe.
Neutron Diffraction Study OfMnSe
Solid State Physics (India) Volume (1999) ISBN 81 7371 2956
Proceedings of the 42th DAE Solid State Physics Symposium.
Held at Indira Gandhi Centre for Atomic Research, Kalpakam, Tamilnadu.
(Bhabha Atomic Research Center, Mumbai, India ) Organised by Board of Research in Nuclear Sciences. , Department of Atomic Energy, Govt. of India.
4. J.B.C. Efrem D’Sa, K.R. Priolkar, R.B.Prabhu, P.R.Sarode and V.N. KamatDalal
Low temperature magnetic properties of MnTe
Solid State Physics (India) Volume 44 453 (2001 ) ISBN 81-7319-486-6
Proceedings of the 44th DAE Solid State Physics Symposium.(Bhabha Atomic Research Center, Mumbai, India ) Organised by Board of Research in Nuclear Sciences. , Department of Atomic Energy, Govt. of India.
5. J.B.C. Efrem D’Sa, K.R. Priolkar, R.B.Prabhu and P.R.Sarode
Effect of Te Doping in MnSe: A Resistivity Study
Solid State Physics (India) Volume 44 491 (2001) ) ISBN 81-7319-486-6
Proceedings of the 44th DAE Solid State Physics Symposium.(Bhabha Atomic Research Center, Mumbai, India ) Organized by Board of Research in Nuclear Sciences.
6. J.B.C. Efrem D’Sa, P.A. Bhobhe, K.R. Priolkar, A. Das. S.K. Paranjpe, R.B. Prabhu and P.R. Sarode.
Neutron Diffraction Study of MnTe
Solid State Physics (India) Volume 44 435 (2001) ) ISBN 81-7319-486-6
Proceedings of the 44th DAE Solid State Physics Symposium.(Bhabha Atomic Research Center, Mumbai, India ) Organized by Board of Research in Nuclear Sciences, Department of Atomic Energy, Govt. of India.
7. J.B.C. Efrem D’Sa, K.R.Priolkar, P.R.Sarode, R.B.Prabhu, ParthasarathiBera and M.S. Hegde
Resistivity and X-ray Photoelectron Spectroscopic studies on MnTexSe1-x.
Inorganic Materials : Recent Advances pg71 (2004) Narosa Publishing House, New Delhi, India ISBN: 9788173195105
Editors, Dhirendra Bahadur, Satish Vitta and Om Prakash
Author: Bahadur, DhirendraVitta, Satish Prakash, Om
8 . J.B.C. Efrem D’Sa, P.A. Bhobhe, K.R. Priolkar,A. Das, P.S.R. Krishna, P.R.Sarode, and R.B.Prabhu,
Low Temperature Magnetic Structure of MnSe
PRAMANA Journal of Physics, Indian Academy of Sciences
Vol. 63, No. 2 August 2004 pp 227-232
ISSN 0304-4289 (print) eISSN 0973-7111(online) Impact factor (2016) 0.520
9. J.B.C. Efrem D’Sa, P.A. Bhobhe, K.R. Priolkar,A. Das, S.K. Paranjpe, R.B.Prabhu and P.R.Sarode
Low temperature neutron diffraction study of MnTe
Journal of Magnetism and Magnetic Material
285 (2005) 267-271 ISSN 0304-8853
Published by ELSEVIER ( This is an international Journal)
10 . K.R. Priolkar, P.A. Bhobhe, J.B.C. Efrem D’Sa, A.Das, P.S.R. Krishna and P.R.Sarode,
Structural and Magnetic Phase Diagram of MnSe 1-xTex
Solid State Physics (India) Volume 50 833 -834 (2005) ISBN 81-8372-019-6
Proceedings of DAE Solid State Physics Symposium.(Bhabha Atomic Research Center, Mumbai, India ) Organized by Board of Research in Nuclear Sciences, Department of Atomic Energy, Govt. of India.
11. Kapil E. Ingle , J.B.C. Efrem D’Sa, A.Das and K.R. Priolkar
Structural and Magnetic phase transition in MnTe-MnSe solid solutions
Journal of Magnetism and Magnetic Material Vol 347 pp 1-170 Pg 68-71
Dec (2013)Published by ELSEVIER ISSN 0304-8853 (Impact factor 2.13)
Research Papers Presented
1. Five day 42th DAE -Solid State Physics Symposium
Paper presented on Neutron diffraction Study of MnSe.
Organized by Board of Research in Nuclear Sciences, Department of Atomic Energy, Govt. of India, National, Dec 26-30 1999held at Bhabha Atomic Research Centre, Mumbai ..
2. Six days 43rd DAE -Solid State Physics Symposium
Paper presented on Low temperature magnetic properties of MnTe
Organized by Board of Research in Nuclear Sciences, Department of Atomic Energy, Govt. of India. National, 26 th-31st December 2000: held at Guru Ghasidas University, Bilaspur, M.P.
3 . Five day 44th DAE -Solid State Physics Symposium
Paper presented on Effect of Te Doping in MnSe: A Resistivity Study
Organized by Board of Research in Nuclear Sciences, Department of Atomic Energy, Govt. of India. National, 26 th -30th December 2001.held at Bhabha Atomic Research Centre, Mumbai .
4 . Five day 44th DAE -Solid State Physics Symposium
Paper presented on Neutron Diffraction Study of MnTe
Organized by Board of Research in Nuclear Sciences, Department of Atomic Energy, Govt. of India. National, 26 th -30th December 2001.held at Bhabha Atomic Research Centre, Mumbai .
5 . Three days International symposium on Recent Advances in Inorganic Materials Paper presented on Resistivity and X-ray Photoelectron Spectroscopic studies on MnTexSe1-x
Organized by Materials Research Society of India (MRSI), Mumbai Chapter and Metals and Material Association, Indian Institute of Technology, Powai, Mumbai. International
11th -12th December 2002: at Indian Institute of Technology, Powai Mumbai.
6 . Conference on Neutron scattering
Paper presented on Low temperature magnetic structure of MnSe and MnTe .
Organised/Sponsoredby Board of Research in Nuclear Sciences, Department of Atomic Energy, Government of India National 2nd -4th January 2004: at BARC Mumbai.
7 . DAE -Solid State Physics Symposium
Paper presented on Structural and Magnetic Phase Diagram of MnTe 1-xSex
Organized by Board of Research in Nuclear Sciences, Department of Atomic Energy, Govt. of India. National 5 th-9th December 2005held at Bhabha Atomic Research Centre, Mumbai.
8. Deutsche Neutronenstreutagung 2008 GarchingGerman Neutron Conference
Paper presentedon Magnetic ordering in MnSe studied using polarized neutrons. Organised byDeutsche Neutronenstreutagung 2008 Garching
(International) (Magnetism and dynamic II T-30 243) 15 – 17 September 2008.
9 . 9thAnnual National Symposium on VLSI and Embedded Systems.
Paper presented on Noise Measurement and Fundamental Constants .
Organised by Department of Physics and Electronics Carmel College Goa University and VSI- Goa Chapter 11th April 2015
10. International Conference on Agriculture, Science, Technology, Management and Social Science 2016 . Paper presented on “Jonson Noise and Short Noise Measurement”.
O rganised by FATER Academy of India (FAI) Goa, November 10-12, 2016.
Participation in Activities.
Science Academies Education Programme A joint collobration of three prestigious sciences academies in India. Indian Academy of Sciences Bangalore, Indian National Science Academy New Delhi, and The National Academy of Sciences, India Allahabad, r egularly organize 16 days Refresher courses in Experimental Physics across the country for college and university teachers in collaboration with the respective institutions / universities.These courses are meant for improving the laboratory programmes at the B.Sc and M.Sc physics levels and to help motivate teachers improve their background knowledge and teaching skills. This program is the flagship activity of Joint Science Educational Panel.
I am associated with the program of the Academy since inception year 2001.I am one of the three member team from Goa University, who have developed and built the low cost user friendly experimental kits for experiments/ laboratory programmes, as well as a resource person for the 16 days Refresher courses in Experimental Physics. Many Universities have adopted experiments in their curriculum developed in this program both at MSc and B.Sc level.
Till date participated in more than 30 Refresher Courses across the country as a resource person.