111 citations · 226 across the 13 of their papers we have counts for
13 papers
The effect of antisite disorder on magnetic and exchange bias properties of Gd-substituted YCoMnO double perovskite
Anasua Khan, Sarita Rajput, M. Anas +4
Combining experimental investigations and first-principles DFT calculations, we report physical and magnetic properties of Gd-substituted YCoMnO double perovskite, which ar…
Defect-induced modulation of magnetic, electronic and optical properties of double perovskite oxide LaCoMnO
Anasua Khan, Swastika Chatterjee, T. K. Nath +1
Electron- and hole-doped LaCoMnO(LCMO) are investigated using first principles DFT calculations. Hole and electron doping are achieved respectively by introducing Sr…
Critical behavior and magnetic relaxation dynamics of Nd0.4Sr0.6MnO3 nanoparticles
S. Kundu, T. K. Nath
Detailed dc and ac magnetic properties of chemically synthesized Nd0.4Sr0.6MnO3 with different particle size (down to 27 nm) have been studied in details. We have found ferromagnet…
Size-dependent electronic-transport mechanism and sign reversal of magnetoresistance in Nd0.5Sr0.5CoO3
S. Kundu, T. K. Nath
A detailed investigation of electronic-transport properties of Nd0.5Sr0.5CoO3 has been carried out as a function of grain size ranging from micrometer order down to an average size…
An Automated Ac Susceptibility Set up Fabricated Using a Closed-Cycle Helium Refrigerator
S. Kundu, T. K. Nath
We have described here the design and operation of an automated ac susceptibility set up using a closed cycle helium refrigerator. This set up is useful for measuring linear and no…
An Automated Home Made Low Cost Vibrating Sample Magnetometer
S. Kundu, T. K. Nath
The design and operation of a homemade low cost vibrating sample magnetometer is described here. The sensitivity of this instrument is better than 10-2 emu and found to be very eff…
Evidence of electronic phase arrest and glassy ferromagnetic behaviour in (Nd0.4Gd0.3)Sr0.3MnO3 manganite : Comparative study between bulk and nanometric samples
S. Kundu, T. K. Nath
The effect of doping of rare earth Gd 3+ ion replacing Nd 3+ in Nd0.7Sr0.3MnO3 is investigated in details. Measurements of resistivity, magnetoresistance, magnetization, linear and…
Size-Induced Exchange Bias Effect and Griffiths Phase in Electron Doped Sm0.09Ca0.91MnO3 manganites
S. K. Giri, T. K. Nath
We report here the magnetic properties of electron-doped Sm1-xCaxMnO3 manganites with the doping level of x=0.91. Exchange bias effect has been observed in Sm0.09Ca0.91MnO3 nanoman…
Transition from a ferromagnetic insulating to a ferromagnetic metallic state in nanoparticles of Nd0.8Sr0.2MnO3 : Study of the electronic - and magneto - transport properties
S. Kundu, T. K. Nath
A detailed investigation of the electronic - and magneto - transport properties of Nd0.8Sr0.2MnO3 with the variation of grain size (down to 42 nm) is presented here. Interestingly,…
Emergence Of Ferromagnetism In Nanoparticles Of Antiferromagnetic Nd0.4Sr0.6MnO3
S. Kundu, T. K. Nath
We have investigated the magnetic state of Nd0.4Sr0.6MnO3 with the variation of its grain size down to average nanometric diameter (40 nm). The bulk sample is antiferromagnetic (AF…
Probing the magnetic state by linear and non linear ac magnetic susceptibility measurements in under doped manganite Nd0.8Sr0.2MnO3
S. Kundu, T. K. Nath
We have thoroughly investigated the entire magnetic states of under doped ferromagnetic insulating manganite Nd0.8Sr0.2MnO3 through temperature dependent linear and non linear comp…
On the question of metallicity and ferromagnetism in charge ordered insulating Nd0.5Sr0.5MnO3 nanoparticles
S. Kundu, T. K. Nath, A. K. Nigam +2
The fascinating phenomenon of destabilization of charge/orbital order in Nd0.5Sr0.5MnO3 with the reduction of grain size is critically investigated. Based on our magnetic and trans…
A phenomenological model for magnetoresistance in granular polycrystalline colossal magnetoresistive materials: the role of spin polarised tunnelling at the grain boundaries
P. Raychaudhuri, T. K. Nath, A. K. Nigam +1
It has been observed that in bulk and polycrystalline thin films of collossal magnetoresistive (CMR) materials the magnetoresistance follows a different behaviour compared to singl…