32 citations · 148 across the 16 of their papers we have counts for
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Dielectric and multiferroic behavior in a Haldane spin-chain compound Sm2BaNiO5 due to an interplay between crystal-field effect and exchange interaction
Sanjay Kumar Upadhyay, Kartik K Iyer, E. V. Sampathkumaran
The Haldane spin-chain (S=1) insulating compound, Sm2BaNiO5, which has been proposed to order antiferromagnetically around (T_N=) 55 K, was investigated for its complex dielectric…
Magnetic behavior of new compounds, Gd3RuSn6 and Tb3RuSn6
Sanjay K Upadhyay, Kartik K Iyer, E. V. Sampathkumaran
We report temperature (T) dependence of dc magnetization, electrical resistivity (rho(T)), and heat-capacity of rare-earth (R) compounds, Gd3RuSn6 and Tb3RuSn6, which are found to…
Magnetic behavior of metallic kagome lattices, Tb3Ru4Al12 and Er3Ru4Al12
Sanjay Kumar Upadhyay, Kartik K Iyer, E. V. Sampathkumaran
We report magnetic behavior of two intermetallics-based kagome lattices, Tb3Ru4Al12 and Er3Ru4Al12, crystallizing in the Gd3Ru4Al12-type hexagonal crystal structure, by measurement…
Extraordinarily large intrinsic magnetodielectric coupling of Tb member within the Haldane spin-chain family, R2BaNiO5
Sanjay Kumar Upadhyay, P. L. Paulose, E. V. Sampathkumaran
The Haldane spin-chain compound, Tb2BaNiO5, has been known to order antiferromagnetically below (T_N= ) 63 K. The present magnetic studies on the polycrystals bring out that there…
Re-entrant spin-glass freezing and magneto-dielectric behavior of Li3NiRuO6, a layered rock-salt related oxide
Sanjay Kumar Upadhyay, Kartik K Iyer, S. Rayaprol +2
We report the results of neutron diffraction, ac and dc magnetization, heat-capacity, complex permittivity, and pyrocurrent measurements on an oxide, Li3NiRuO5, hitherto not paid m…
Relaxor ferroelectric behavior and intrinsic magnetodielectric behavior near room temperature in Li2Ni2Mo3O12, a compound with distorted honeycomb and spin-chains
Sanjay Kumar Upadhyay, Kartik K Iyer, Shankar Ghosh +2
Keeping current interests to identify materials with intrinsic magnetodielectric behavior near room temperature and with novel pyroelectric current anomalies, we report temperature…
Study of Electro-Caloric Effect in Ca and Sn co-Doped BaTiO3 Ceramics
Sanjay Kumar Upadhyay, Iram Fatima, V. Raghavendra Reddy
The present work deals with the study of structural, ferroelectric, dielectric and electro-caloric effects in lead free ferroelectric polycrystalline Ba1-xCaxTi0.95Sn0.05O3 (x= 2,…
Evolution of magnetic and dielectric properties in Sr-substituted high temperature multiferroic YBaCuFeO5
Surender lal, Sanjay K. Upadhyay, K. Mukherjee +1
We report the evolution of structural, magnetic and dielectric properties due to partial substitution of Ba by Sr in the high temperature multiferroic YBaCuFeO5. This compound exhi…