56 citations · 301 across the 15 of their papers we have counts for
15 papers
Bulk superconductivity and non-trivial band topology analysis of Pb2Pd
M. M. Sharma, N. K. Karn, Poonam Rani +2
A perfect topological superconductor can be realized by the simultaneous existence of bulk superconductivity along with topological non-trivial surface states. In this article, we…
Probing low temperature non-equilibrium magnetic state in CoFeO spinel oxide using dc magnetization, ac susceptibility and neutron diffraction experiments
R. N. Bhowmik, Amit Kumar, A. K. Sinha +1
The low temperature lattice structure and magnetic properties of CoFeO ferrite have been investigated using experimental results from synchrotron x-ray diffra…
Tuning of structural phase, magnetic spin order and electrical conductivity in mechanical alloyed material of alpha-Fe2O3 and alpha-Cr2O3 oxides
R. N. Bhowmik, K. Venkata Siva, V. R. Reddy +1
Alpha-Fe2O3 and alpha-Cr2O3 has been mechanical alloyed to prepare Fe1-xCrxO3 oxides for x = 0.2-0.8. Synchrotron X-ray diffraction and Raman spectra have shown inhomogeneous struc…
High temperature thermal cycling effect on the irreversible responses of lattice structure, magnetic properties and electrical conductivity in CoFeO spinel oxide
R. N. Bhowmik, P. D. Babu, A. K. Sinhac +1
We report high temperature synchrotron X-ray diffraction (SXRD), dc magnetization and current-voltage (I-V) characteristics for the samples of CoFeO ferrite.…
Physical properties of RIr3 (R = Gd, Tb, Ho) compounds with coexisting polymorphic phases
Binita Mondal, Shovan Dan, Sudipta Mondal +3
The binary compounds GdIr3, TbIr3 and HoIr3 are synthesized successfully and found to form in macroscopic co-existence of two polymorphic phases: C15b and AuCu3-type. The dc magnet…
Low temperature ferromagnetic properties, magnetic field induced spin order and random spin freezing effect in Ni1.5Fe1.5O4 ferrite; prepared at different pH values and annealing temperatures
R. N. Bhowmik, K. S. Aneeshkumar
We present the low temperature magnetic properties in Ni1.5Fe1.5O4 ferrite as the function of pH at which the material was prepared by chemical route and post annealing temperature…
Non-equilibrium character of resistive switching and negative differential resistance in Ga-doped Cr2O3 system
R. N. Bhowmik, K. Venkata Siva
We have synthesized Ga-doped Cr2O3 system with compositions Cr1.45Ga0.55O3 and Cr1.17Ga0.83O3 by chemical co-precipitation route and post annealing at 800^C. The samples have been…
Electric field controlled magnetic exchange bias and magnetic state switching at room temperature in Ga doped α-Fe2O3 oxide
R. N. Bhowmik, Abdul Gaffar Lone
We have developed a new magnetoelectric material based on Ga doped α-Fe2O3 in rhombohedral phase. The material is a canted ferromagnet at room temperature and showing magneto-elect…
Doping of Ga in antiferromagnetic semiconductor alpha-Cr2O3oxide and its effects on modified magnetic and electronic properties
R. N. Bhowmik, K. Venkata Siva, R. Ranganathan +1
The samples of Ga doped Cr2O3 oxide have been prepared using chemical co-precipitation route. X-ray diffraction pattern and Raman spectra have confirmed rhombohedral crystal struct…
Low temperature ferromagnetism, surface paramagnetism and exchange bias effect in nano-grained alpha-Fe1.4Ga0.6O3 oxide
R. N. Bhowmik, N. Naresh, B. Ghosh +1
The compound alpha-Fe1.4Ga0.6O3 has been prepared by mechanical alloying of alpha-Fe2O3 and Ga2O3 and subsequent heating of the mechanical alloyed samples in vacuum condition. Magn…
Room temperature ferromagnetism and giant permittivity in chemical routed Co1.5Fe1.5O4 ferrite particles and their composite with NaNO3
R. N. Bhowmik, P. Lokeswara Rao, J. Udaya Bhanu
We report structural, magnetic and dielectric properties of Co1.5Fe1.5O4 nanoparticles and their composites with non-magnetic NaNO3. The samples were derived from metal nitrates so…
Ferromagnetism in lead graphite-pencils and magnetic composite with CoFe2O4 particles
R. N. Bhowmik
This work has been initiated with a curiosity to investigate the elemental composition and magnetic response of different grades of lead pencils (6B, 2B, HB, 2H, 5H) that people us…
Evidence of Ferrimagnetism in Ferromagnetic La0_{67}Ca0_{33}MnO_3 nanoparticle
R. N. Bhowmik
The present report is dedicated to show that ferromagnetic La0.67Ca0.33MnO3 (LCMN) particles can be better described in the framework of ferrimagnetic model. To confirm the ferrima…
Magnetic Response of NiFe2O4 nanoparticles in polymer matrix
A. Poddar, R. N. Bhowmik, Amitabha De +1
We report the magnetic properties of magnetic nano-composite, consisting of different quantity of NiFe2O4 nanoparticles in polymer matrix. The nanoparticles exhibited a typical mag…
Magnetic Modulation in Mechanical Alloyed Cr1.4fe0.6o3 Oxide
R. N. Bhowmik, Nrisimha Murty. M, Sekhar Srinadhu. E
We have synthesized Cr1.4Fe0.6O3 compound through mechanical alloying of Cr2O3 and Fe2O3 powders and subsequent thermal annealing. The XRD spectrum, SEM picture and microanalysis o…