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Spin-reorientation and weak ferromagnetism in antiferromagnetic TbMn0.5Fe0.5O3

Nhalil, Hariharan and Nair, Harikrishnan S and Sanathkumar, R and Strydom, Andre M and Elizabeth, Suja (2015) Spin-reorientation and weak ferromagnetism in antiferromagnetic TbMn0.5Fe0.5O3. In: JOURNAL OF APPLIED PHYSICS, 117 (17).

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Official URL: http://dx.doi.org/ 10.1063/1.4919660

Abstract

Orthorhombic single crystals of TbMn0.5Fe0.5O3 are found to exhibit spin-reorientation, magnetization reversal, and weak ferromagnetism. Strong anisotropy effects are evident in the temperature dependent magnetization measurements along the three crystallographic axes a, b, and c. A broad magnetic transition is visible at T-N(Fe/Mn) = 286K due to paramagnetic to A(x)G(y)C(z) ordering. A sharp transition is observed at T-SR(Fe/Mn) = 28 K, which is pronounced along c axis in the form of a sharp jump in magnetization where the spins reorient to G(x)A(y)F(z) configuration. The negative magnetization observed below T-SR(Fe/Mn) along c axis is explained in terms of domain wall pinning. A component of weak ferromagnetism is observed in field-scans along c-axis but below 28 K. Field-induced steps-like transitions are observed in hysteresis measurement along b axis below 28 K. It is noted that no sign of Tb-order is discernible down to 2K. TbMn0.5Fe0.5O3 could be highlighted as a potential candidate to evaluate its magneto-dielectric effects across the magnetic transitions. (C) 2015 AIP Publishing LLC.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the AMER INST PHYSICS, 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 26 Jun 2015 06:42
Last Modified: 26 Jun 2015 06:42
URI: http://eprints.iisc.ac.in/id/eprint/51775

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