论文信息 - Magnetocaloric Effect and Magnetic Properties of High Pressure Synthesized RhFe Compound

Magnetocaloric Effect and Magnetic Properties of High Pressure Synthesized RhFe Compound

The studies of X-ray diffraction, magnetization, magnetocaloric effect, and 57Fe Mössbauer spectra have been performed in a bulk sample of RhFe compound synthesized under high pressure. It have been found that RhFe has fcc-type of crystal structure at room temperature and, shows the first order magnetic transition from the antiferromagnetic-like to ferromagnetic state close to 338 K at 5T magnetic field. This type of behavior has been verified by differential scanning calorimetry, magnetization and Mössbauer techniques. The irreversible transition from antiferromagnetic to stable ferromagnetic state has been observed after heating of sample up to 573K.

[1] J. Żukrowski,et al. Spin- and charge density around Rh impurity in α-Fe studied by 57Fe Mössbauer spectroscopy , 2009 .

[2] M. Rajagopalan. STRUCTURAL PHASE TRANSITION INDUCED BY PRESSURE IN THE ORDERED ALLOY FeRh , 2005 .

[3] T. Motohashi,et al. Solid State Communication , 2003 .

[4] A. Hernando,et al. Magnetic interactions in nanocrystalline FeRh alloys studied by in field Mössbauer spectroscopy , 2000 .

[5] Vitalij K. Pecharsky,et al. MAGNETOCALORIC EFFECT AND HEAT CAPACITY IN THE PHASE-TRANSITION REGION , 1999 .

[6] D. Fiorani,et al. Boundary spin disorder in nanocrystalline FeRh alloys , 1998 .

[7] A. Yavari,et al. Enthalpies of B2 antiferro-ferromagnetic and metastable fcc-B2 transformations in FeRh , 1996 .

[8] A. Yavari,et al. The spin glass state of metastable fcc FeRh , 1996 .

[9] J. Galibert,et al. GIANT-ROOM TEMPERATURE MAGNETORESISTANCE IN THE FERH ALLOY , 1995 .

[10] P. Algarabel,et al. Giant volume magnetostriction in the FeRh alloy. , 1994, Physical review. B, Condensed matter.

[11] A. Tishin,et al. The magnetocaloric effect in Fe49Rh51 compound , 1990 .

[12] A. Tsvyashchenko. High pressure synthesis of RE6Cu23 compounds (RE Tb, Dy, Yb, Lu) , 1984 .

[13] J. Kouvel,et al. Effects of Mechanical and Thermal Treatment on the Structure and Magnetic Transitions in FeRh , 1967 .

[14] J. Kouvel,et al. Anomalous Magnetic Moments and Transformations in the Ordered Alloy FeRh , 1962 .