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Electrical transport properties of Dy0.5Gd4.5Si2Ge2

✍ Scribed by R. Nirmala; V. Sankaranarayanan; K. Sethupathi; A.V. Morozkin; Y. Yamamoto; H. Hori

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
780 KB
Volume
373
Category
Article
ISSN
0921-4526

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✦ Synopsis

Polycrystalline, Dy 0.5 Gd 4.5 Si 2 Ge 2 compound (monoclinic, space group P21/a) has been synthesized and characterized. This compound orders ferromagnetically at $210 K (T C ) followed by an antiferromagnetic-like transition at $21 K (T N ). The electrical resistivity, r, follows T 2 law in the ferromagnetically ordered state indicating the presence of dominant single magnon scattering. There is a pronounced increase of resistivity in the vicinity of antiferromagnetic transition. Thermoelectric power, S, indicates a slope change near T C and has T 3 dependence at low temperatures.

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