Smart ideas & Group work

"SMART" group focuses on problems related to structure and physical properties of new complex phases, digging deep into the science of structure correlated properties.

Principal Investigator

Dr. Somaditya Sen is an Associate Professor in Physics department at Indian Institute of Technology Indore since Feb 2013, also serving as an Adjunct Associate Professor at Ming Chi University of Technology at Taiwan. Dr. Sen works on structure correlated properties of magnetic oxide semiconductors. Co-doping in simple and complex (perovskite/double perovskite) oxides and exploring functionalities on the application side.

International and National Collaborations:

The group is in collaboration with several groups in USA, Taiwan and India. Student exchange happens at the level of BTech students, Masters and Doctoral level. The group now has a working counterpart at MCUT where the Principal Investigator is an Adjunct Faculty. Most characterizations are done in India with a growing collaboration proving to be a stronger every day.

Highlights

2018 September 15: Tulika Srivastava gets postdoctoral position in Canada

2018 September 10th: Gaurav Bajpai gives Open Seminar

2018 September 6th: Arun Yadav graduates and obtains his PhD degree

2018 August 16th: Arun Yadav recieves offer letter from Northwestern Polytechnical University, China

2018 April: Tulika Srivastava graduates and obtains her PhD degree

2018 April: Congratulations Tulika Srivastava for joining a postdoctoral position in IIT Kanpur

Nanoparticle Synthesis

Nanoparticles of complex oxide materials using different solution based techniques. Sol-gel based materials generally tend to be small but agglomerated. This techniques generally yields extremely high purity single phase materials. Using Hydrothermal technique, generally different morphology of the same material can be produced. However, although doping can be modified the exact amount of doping always remain a undertermined factor. Co-precipitation is a powerful method similar to solgel, which can synthesize pure paze materials but with different morphologies. However, chances of phase segregation is more than solgel process.

Material Characterization

One of the projects presently running is on PbTiO3-based multiferroics. A structure correlated ferroelectric and magnetic study of these materials is being systematically projected. Results are published and more is being communicated. A BaTiO3/PbTiO3 system is also under similar investigation. The group has recently published on (Na/Bi)TiO3-ABO3 system yeilding high dielectric constant materials applicable for energy storage

Applications as Semiconductors

The effects of doping/substitution of different simple and complex oxide materials are investigated in the light of light/chemical sensing. After a preliminary structural testing in the lab a comparitive study is done with the help of collaborators. Recently there are several reports published from the group on UV sensing and moisture sensing. A home made setup has been assembled by the intern students.

Applications as Dielectrics and Magnetic Materials

The possibility of application of High Dielectric constant and high magnetic materials in the field of Dielectric Resonator Antennas are being investigated. BTech interns from 3rd and 2nd year are working on such projects and collaborating with international collaborators on the same. This project is being jointly worked out with the Center of Astronomy in IITI.