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Browsing Research Articles (Sundaresan A.) by Author "De, Chandan"

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The absence of ferroelectric polarization in layered and rock-salt ordered NaLnMnWO(6) (Ln = La, Nd, Tb) perovskites

De, Chandan; Kim, Tai Hoon; Kim, Kee Hoon; Sundaresan, A. (Royal Society of Chemistry, 2014)

The ordered perovskites, NaLnMnWO(6) (Ln = La, Nd, Tb), are reported to exhibit simultaneous ordering of A-site cations (Na and Ln) in layered arrangement and B-site cations (Mn and W) in rock salt structure. They have ...
Effect of internal electric field on ferroelectric polarization in multiferroic TbMnO3

De, Chandan; Ghara, Somnath; Sundaresan, A. (Pergamon-Elsevier Science Ltd, 2015)

Pyro-current measurements have been widely used to study ferroelectric properties in multiferroic materials. However, determination of intrinsic polarization by this method is not straightforward because of leakage current ...
Is CH3NH3PbI3 Polar?

Sharada, G.; Mahale, Pratibha; Kore, Bhushan P.; Mukherjee, Somdutta; Pavan, Mysore S.; De, Chandan; Ghara, Somnath; Sundaresan, A.; Pandey, Anshu; Row, Tayur N. Guru; Sarma, D. D. (American Chemical Society, 2016)

In view of the continued controversy concerning the polar/nonpolar nature of the hybrid perovskite system, CH3NH3PbI3, we report the first investigation of a time resolved pump probe measurement of the second harmonic ...
Possible coexistence of cycloidal phases, magnetic field reversal of polarization, and memory effect in multiferroic R0.5Dy0.5MnO3 (R=Eu and Gd)

De, Chandan; Sundaresan, A. (American Institute of Physics, 2015)

We report the occurrence of both ab and bc cycloidal ordering of Mn-spins at different temperatures and their possible coexistence at low temperatures in the polycrystalline mixed rare-earth compounds, R0.5Dy0.5MnO3 (R = ...
Ti-rich double perovskites LnCu(3-y)Ti(2-x)Mn(2+x+y)O(12): ferrimagnetism and magnetoresistance up to room temperature

Seikh, Md. Motin; Caignaert, V.; Sundaresan, A.; De, Chandan; Raveau, B. (Royal Society of Chemistry, 2014)

Ti-rich double perovskites LnCu(3-y)Ti(2-x)Mn(2+x+y)O(12) have been synthesized at normal pressure, with a wide homogeneity range, 0 < x < 0.5 and 0 < y <= 1. ALL these oxides are ferrimagnetic, with T-C ranging from 160 ...

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