110 citations · 500 across the 15 of their papers we have counts for
15 papers
Nonmonotonic particle-size-dependence of magnetoelectric coupling in strained nanosized particles of BiFeO
Sudipta Goswami, Dipten Bhattacharya, Chandan K. Ghosh +4
Using high resolution powder x-ray and neutron diffraction experiments, we determined the off-centered displacement of the ions within a unit cell and magnetoelectric coupling in n…
Evidence for two spin-glass transitions with magnetoelastic and magnetoelectric couplings in the multiferroic (BiBa)(FeTi)O system
Arun Kumar, S. D. Kaushik, V. Siruguri +1
For disordered Heisenberg systems with small single ion anisotropy, two spin glass transitions below the long range ordered phase transition temperature has been predicted theoreti…
Origin of Ferroelectricity in Orthorhombic LuFeO
Ujjal Chowdhury, Sudipta Goswami, Amritendu Roy +13
We demonstrate that small but finite ferroelectric polarization (0.01 C/cm) emerges in orthorhombic LuFeO () at (600 K) because of commensurate (…
Origin of magnetic moments and presence of a resonating valence bond state in BaYIrO
Abhishek Nag, Sayantika Bhowal, M. M. Sala +10
While it was speculated that 5 systems would possess non-magnetic ~=~0 ground state due to strong Spin-Orbit Coupling (SOC), all such systems have invariably shown presence…
Spin-orbital liquid state assisted by singlet-triplet excitation in ground state of BaZnIrO
Abhishek Nag, Srimanta Middey, Sayantika Bhowal +17
Strong spin-orbit coupling (SOC) effects of heavy -orbital elements have long been neglected in describing the ground states of their compounds thereby overlooking a variety of…
Large magnetoelectric coupling in nanoscale BiFeO from direct electrical measurements
Sudipta Goswami, Dipten Bhattacharya, Lynette Keeney +9
We report the results of direct measurement of remanent hysteresis loops on nanochains of BiFeO at room temperature under zero and 20 kOe magnetic field. We noticed a sup…
Unconventional magnetism in the spin-orbit driven Mott insulators Ba3MIr2O9 (M=Sc,Y)
Tusharkanti Dey, R. Kumar, A. V. Mahajan +2
We have carried out detailed bulk and local probe studies on the hexagonal oxides Ba3MIr2O9 (M=Sc,Y) where Ir is expected to have a fractional oxidation state of +4.5. In the struc…
Disorder-Driven Spin-Reorientation in Multiferroic
Sonu Namdeo, S. S. S. Rao, S. D. Kaushik +2
Magnetic structure evolution of multiferroic hexagonal ( and ) has been studied by carrying out detailed temperature-dependent neutron d…
Neutron diffraction evidence for kinetic arrest of first-order magneto-structural phase transitions in some functional magnetic materials
V. Siruguri, P. D. Babu, S. D. Kaushik +4
Neutron diffraction measurements, performed in presence of an external magnetic field, have been used to show structural evidence for the kinetic arrest of the first-order phase tr…
Magnetism driven ferroelectricity above liquid nitrogen temperature in Y2CoMnO6
G. Sharma, J. Saha, S. Patnaik
We report multiferroic behavior in double perovskite Y2CoMnO6 with ferroelectric transition temperature Tc = 80K. The origin of ferroelectricity is associated with magnetic orderin…
Neutron diffraction evidence for kinetic arrest of the first-order austenite to martensite transition in Ni37Co11Mn42.5Sn9.5
V. Siruguri, S. D. Kaushik, P. D. Babu +4
Neutron diffraction measurements, performed in presence of an external magnetic field, have been used to show structural evidence for the kinetic arrest of the first-order phase tr…
Magnetic behavior of Ba_{3}Cu_{3}Sc_{4}O_{12}
B. Koteswararao, A. V. Mahajan, F. Bert +8
The chain-like system Ba_{3}Cu_{3}Sc_4O_{12} has potentially interesting magnetic properties due to the presence of Cu^{2+} and a structure-suggested low-dimensionality. We present…
Atomic scale chemical fluctuation in LaSrVMoO6: A proposed halfmetallic antiferromagnet
Somnath Jana, Vijay Singh, S. D. Kaushik +7
Half metallic antiferromagnets (HMAFM) have been proposed theoretically long ago but have not been realized experimentally yet. Recently, a double perovskite compound, LaSrVMoO6, h…
Glass-like ordering and spatial inhomogeneity of magnetic structure in Ba3FeRu2O9 : The role of Fe/Ru-site disorder
Srimanta Middey, Sugata Ray, K. Mukherjee +7
Several doped 6H hexagonal ruthenates, having the general formula Ba3MRu2O9, have been studied over a significant period of time in order to understand the unusual magnetism of rut…
Intriguing complex magnetism of Co in RECoAsO (RE=La, Nd and Sm)
Anand Pal, M. Tropeano, Mushahid Hussain +2
We synthesized bulk polycrystalline samples of RECoAsO (RE=La, Nd and Sm) by solid state reaction route in an evacuated sealed quartz tube. All these compounds are crystallized in…