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Questions related from Tapan Chatterji
Study of hyperfine interaction between electron and nuclear spin systems often give useful information about the electronic magnetism. Recently hyperfine interaction has been used for quantum...
03 November 2015 3,968 1 View
It is well-known that the symmetry of the nonlinear optical susceptibility is strongly affected by a magnetization or an external applied magnetic field. Thus it is of considerable interest to...
01 June 2015 9,100 10 View
We normally think that the velocity of light is constant in all inertial frames is a postulate or the experimental result of Michelson-Morley experiment. But is it true that the Maxwell's...
23 September 2014 5,726 3 View
Condensed matter theories are notorious for not being able to predict spectacular results/effects before the experiments were done. What they often do is to rationalize experimental results that...
27 August 2014 9,162 4 View
Superconductivity is essentially an emergent phenomenon of many body electron system. I am wondering how much size reduction can it stand. Certainly no superconductivity exists for a single atom...
17 August 2014 6,168 4 View
Coherent diffraction is progressing enormously due to the advent of modern X-ray sources including XFEL. Can any one explain me how the old phase problem in crystallography be tackled by coherent...
25 June 2014 9,750 16 View
The IV-VI narrow band gap semiconductor GeTe undergoes a ferroelectric phase transition at about 600 K. At this transition the high temperature paraelectric cubic NaCl type phase undergoes a...
17 June 2014 5,541 3 View
We have measured the magnetic field dependence of the ordered magnetic moment of Tb and Mn in multiferroic TbMn2O5 by single crystal neutron diffraction. The Mn moment does not change...
24 January 2014 481 2 View
We have observed smaller volume in nanoparticles of half-doped manganites LCMO (La0.5Ca0.5MnO3) and PCMO(Pr0.5Ca0.5MnO3). We explained this by the effective surface tension of the nanoparticles....
02 May 2013 1,395 15 View
The study of detailed crystal and magnetic structures and magnetization density in Fe3O4 by single crystal X-ray and polarized neutron diffraction is extremely difficult due to the presence of...
25 April 2013 1,914 14 View
Hexagonal manganites RMnO3 (R = Y, Dy, Ho, Er, Tm, Lu etc.) are multiferroic materials with ferroelectric transition at about 1000 K whereas the magnetic transition is at about 100 K. Unlike the...
26 March 2013 601 8 View
The determination of magnetic structure by powder neutron diffraction is a well established technique. However due to the existence of several program suites viz; Fullprof a lot of users tend to...
03 February 2013 2,843 10 View
I have been looking at magnetoelastic effects in general and intrinsic magnetostriction in several magnetic materials including strongly correlated electron systems and multiferroics viz....
10 January 2013 1,734 6 View
