Title :
Magnetic Properties of Single-Crystalline FeRh Alloy Thin Films
Author :
Inoue, Sho ; Ko, Hnin Yu Yu ; Suzuki, Takao
Author_Institution :
Inf. Storage Mater. Lab., Toyota Technol. Inst., Nagoya
Abstract :
The structural and magnetic properties of single-crystalline Fe100-XRhX (26lesXles63) grown on MgO (100) substrates were systematically studied as a function of composition, temperature and applied magnetic field. The first-order magnetic phase transition of Fe100-XRhX was observed with the range of 51lesXles60. The temperature dependent magnetization behavior for all the samples under investigation is presented. The transition temperature for the change from anti-ferromagnetic (AFM) to a ferromagnetic (FM) state vary between 70 to 150degC. The change in entropy, DeltaS, estimated by the change in transition temperature with applied magnetic field during cooling process, decreases with increasing X and at Xcong62, it become zero. The observed hysteresis loop performed P-MOKE shows shaper transition as compared to VSM, indicates that surface magnetization distribution is different from the overall film.
Keywords :
Kerr magneto-optical effect; ferromagnetic-antiferromagnetic transitions; iron alloys; magnetic hysteresis; magnetic thin films; magnetic transition temperature; rhodium alloys; FeRh; P-MOKE; anti-ferromagnetic-ferromagnetic phase transformation; first-order magnetic phase transition; hysteresis loop; polar magneto-optical Kerr effect; single-crystalline FeRh alloy thin films; structural properties; surface magnetization distribution; temperature dependent magnetization behavior; transition temperature; FeRh; magnetic transition; polar magneto-optical Kerr effect; thin film;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2008.2001846
