Giant magnetoresistance and field-induced phase transitions in Tb7Rh3 single crystal

High-field magnetization and magnetoresistance measurements have been performed to investigate the field-induced magnetic phase transitions in Tb 7 Rh 3 single crystals. Metamagnetic transitions were observed along the a -, b - and c -axes of the hexagonal crystal lattice in the three magnetic state...

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Bibliographic Details
Published in:Journal of the Korean Physical Society 2013, 63(3), , pp.563-566
Main Authors: Tsutaoka, Takanori, Shimomura, Koji, Baranov, Nikolai V., Proshkin, Alexey V., Gerasimov, Evgeny G., Terentev, Pavel B.
Format: Article
Language:English
Subjects:
Mathematical and Computational Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Theoretical
물리학
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Summary:High-field magnetization and magnetoresistance measurements have been performed to investigate the field-induced magnetic phase transitions in Tb 7 Rh 3 single crystals. Metamagnetic transitions were observed along the a -, b - and c -axes of the hexagonal crystal lattice in the three magnetic states at temperatures below the Néel temperature T N = 91 K; magnetic field H — temperature T phase diagrams were constructed for b - and c -axes. At temperatures below T N , the magnetic structure transformations under application of a magnetic field along the b -axis are observed to be accompanied by the giant magnetoresistance effect (|Δ ρ / ρ | up to 65%). Magnetization curves measured at temperatures above T N show inflection points, which may be indicative of phase transitions within regions with an antiferromagnetic short-range order persisting in a paramagnetic matrix.
ISSN:0374-4884
1976-8524
DOI:10.3938/jkps.63.563