Magnetic phase transition in iron-rhodium thin films probed by ferromagnetic resonance

We report the results of ferromagnetic (FMR) resonance measurements on epitaxial FeRh/MgO(0 0 1) samples across the phase transition from the antiferromagnetic (AF) state of FeRh to its ferromagnetic (F) state. From temperature-dependent measurements of position, width and amplitude of the FMR line...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2013-06, Vol.46 (24), p.245302-1-5
Main Authors: Mancini, E, Pressacco, F, Haertinger, M, Fullerton, E E, Suzuki, T, Woltersdorf, G, Back, C H
Format: Article
Language:English
Subjects:
Amplitudes
Antiferromagnetism
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Constants
Damping
Epitaxy
Exact sciences and technology
Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances
spin-wave resonance
Ferromagnetism
Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.)
Magnetic properties and materials
Magnetic resonances and relaxations in condensed matter, mössbauer effect
Magnetically ordered materials: other intrinsic properties
Phase transformations
Physics
Thin films
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Summary:We report the results of ferromagnetic (FMR) resonance measurements on epitaxial FeRh/MgO(0 0 1) samples across the phase transition from the antiferromagnetic (AF) state of FeRh to its ferromagnetic (F) state. From temperature-dependent measurements of position, width and amplitude of the FMR line the phase transition is studied in detail. Our measurements indicate that the AF to F phase transition of FeRh is first order in nature. In addition, the angular and frequency-dependent FMR measurements are used to determine the anisotropy constants and the Gilbert damping parameter of the epitaxial FeRh films.
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/46/24/245302