Group Page: http://www.iitk.ac.in/mse/emg/
Vacancies are available in our group in the area of Multiferroic materials,
thin films and devices as well as on organic solar cells with empahsis
on improving efficiency and life times. You need to
apply formally to MSE department (DPGC Convener) which can be done online as well as
offline, following which you will be called for an interview if
shortlisted. Applications are invited throughout the year.
Research Activities
Publications
People
Funding
Teaching
Past Members
Group members
| Research Staff
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Research
Activities
Currently my group is
active in areas of Multiferroics and Photovoltaics.
Oxide Electronics
Here, we are primarily
studying the devices and materials based on ferroelectric and/or
multiferroic functionality.
On materials side, we
are particularly interested in understanding the effect of
atomic substituion and strain on the structure and properties of these
oxides, in both bulk as well as thin film form. We achieve this both
theoretically (with Physics colleagues Prof.
Rajendra Prasad and Prof. Sushil Auluck)
and experimentally by testing bulk and thin film samples and devices
based on a few oxides such as bismuth ferrite, gallium ferrite and
other materials (with Physics
colleague Prof.
Rajeev Gupta).
On device side, we are
working field
effect transistor devices based on ferroelectrics and dielectrics using
organic semiconductors and magnetic semiconductors as
channel.
Photovoltaics: Organic Solar Cells
In this, we
are currently trying to understand the degradation and
stability related aspects of OPV devices. We are working on
life time related issues, hyrbid
and printable device development.
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Recent Publications
(For rather comeplete list of pulications, See ResearcherID F-9843-2010 (not updated regularly)
- Spin Glass-like Phase below ~ 210 K in Magnetoelectric Gallium Ferrite, Applied Physics Letters, 100, 112904 (2012)
- First
Principle Study of Magnetism and Magneto-structural Coupling in Gallium
Ferrite, Journal of Applied Physics, 111, 043915 (2012)
- Electronic structures, born effective charges and
spontaneous polarization in magnetoelectric gallium ferrite, Journal of
Physics C (Cond. Mat.), 23, 445403 (2011)
- An Investigation in InGaO3(ZnO)m
Pellets as a Cause of
Variability in Thin Film Transistor Characteristics,
Bulletin of Materials Science, 34 (3), 447-454 (2011)
- Absence of Morphotropic Phase Boundary Effects in
BiFeO3-PbTiO3 Thin Films
Grown via a Chemical Multilayer Deposition
Method, Applied Physics A: Volume 104 (1), 395-400 (2011)
- Influence of Zr doping on the structure and
ferroelectric properties of BiFeO3 Thin
Films, Journal
of Applied Physics, 107, 123535 (2010)
- First-Principles Calculations of Born Effective Charges and
Spontaneous Polarization
of Ferroelectric Bismuth Titanate, Journal of Physics: Condensed
Matter, 22,
165902 (2010)
- Impedance Spectroscopy Studies on Polycrystalline BiFeO3
Thin Films on Pt/Si Substrates, Journal of Applied Physics, 105, 054103
(2009)
- Structural Changes and Ferroelectric Properties of BiFeO3-PbTiO3
Thin
Films Grown via a Chemical Multilayer Deposition Method, Journal of
Applied Physics, 105, 014101 (2009)
- Photovolatic Effect in Organic Solar Cell device Using
AVPV, Solar Energy Materials and Solar Cells, 93, 211-214 (2009)
- Magnetic Studies on Multiferroic Bi1-xSmxFeO3
Ceramics Synthesized by
Mechanical Activation Assisted Process, Journal of Physics C: Condensed
Matter, 21 (2009) 026007
- Phase Stability in Ferroelectric Bismuth Titanate: A First
Principles Study, Acta Crystallographica., A64, 368-375 (2008)
- Phase Evolution, Magnetic and Electrical Properties in
Sm-doped Bismuth Ferrite, Journal of Applied Physics, 103, 044101 (2008)
- Effect of Heat Treatment on Structure and Properties of
Chemical
Solution Deposited BiFeO3 Thin Films, Applied
Physics A, 90, 197-202
(2008)
- Structural
Changes in Chemical Solution Deposited Lanthanum Doped Bismuth Ferrite
Thin Films, Applied Physics Letters, 92, 152905 (2008)
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Support / Funding
We acknowledge the
financial support from funding bodies DST, MHRD, CSIR and IIT Kanpur.
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Teaching at IITK
Taught
courses:
- MME663: Electronic and Magnetic Properties of Ceramics
(Current)
- MME681: Solar Energy Technologies and Materials - PG level
elective course
- MME410: Electronic and Magnetic Properties of Materials -
UG level compulsory course
- MME648: Diffusion in Solids - PG level elective course
- ESO214: Nature and Properties of Materials - Core course
for UG students of all branches
- MME689: Multifunctional Oxides (Science of Electronic
Ceramics): PG level course
Tutored
courses:
- Thermodynamics (ESO202): UG level core course for all
branches
- Manufacturing Processes (TA201): UG level core course for
all branches
- ESO214: Nature and Properties of Materials: UG level core
course for all branches
Course materials available
on
Lattice
(Intranet)
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Contact
Information:
