Electrical and magnetotransport properties of canted antiferromagnet Dy/sub 5/Si/sub 2/Ge/sub 2

Summary form only given. Since the giant magnetocaloric effect is encountered in a ferromagnetic Gd/sub 5/Si/sub 2/Ge/sub 2/ alloy near room temperature it is considered as a suitable material for magnetic refrigerator applications. Also a commensurate structural transition occurs at the magnetic tr...

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Bibliographic Details
Main Authors: Nirmala, R., Sankaranarayanan, V., Sethupathi, K., Morozkin, A.V., Chu, Z., Yelon, W.B., Malik, S.K., Prasad, V., Subramanyam, S.V.
Format: Conference Proceeding
Language:English
Subjects:
Antiferromagnetic materials
Crystalline materials
Germanium alloys
Iron alloys
Magnetic materials
Magnetic properties
Refrigeration
Silicon alloys
Temperature
X-ray diffraction
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Summary:Summary form only given. Since the giant magnetocaloric effect is encountered in a ferromagnetic Gd/sub 5/Si/sub 2/Ge/sub 2/ alloy near room temperature it is considered as a suitable material for magnetic refrigerator applications. Also a commensurate structural transition occurs at the magnetic transition temperature and there is a good correlation between the crystal structure and magnetic properties. Such observations have triggered numerous experimental studies on similar rare earth alloys and compounds. We have synthesized its Dy- analogue, namely, Dy/sub 5/Si/sub 2/Ge/sub 2/ and have characterized it by means of room temperature X-ray diffraction, ac magnetic susceptibility (15 K - 300 K), electrical resistivity (at zero field and at 6 T), thermoelectric power (15 K - 300 K) and neutron diffraction (at 300 K and 9.2 K) experiments.
DOI:10.1109/INTMAG.2002.1001082