Electrical resistivity measurements of single crystalline -Mn under high pressure

Miyake, Atsushi*; Kanemasa, Tsunehiro*; Yagi, Ryohei*; Kagayama, Tomoko*; Shimizu, Katsuya*; Haga, Yoshinori ; Onuki, Yoshichika

We have measured electrical resistivity of single crystalline -manganese (-Mn) under high pressure. -Mn shows an antiferromagnetic ordering at $T_{rm N}$ = 95 K and has four inequivalent crystal sites with different magnetic moments. With increasing pressure, $T_{rm N}$ shifts toward lower temperature. At higher pressure, the shape of anomaly at $T_{rm N}$ changes to a kink-like one, which may indicate different magnetic ordering from that at lower pressure. Such a difference between lower and higher pressure regions is considered to be caused by the four inequivalent magnetic moments in -Mn. At 1.9 GPa, the boundary of the ordered phases, we observe a sudden decrease of the residual resistivity and a peak of the A-coefficient of -term of the resistivity.

Language	:	English
Journal	:	Journal of Magnetism and Magnetic Materials
Volume	:	310
Number	:	2, Part1
Pages	:	p.e222 - e224
Publication Year/Month	:	2007/03
Meeting title	:	17th International Conference on Magnetism (ICM 2006)
Held date	:	2006/08
Location (city)	:	Kyoto
Location (country)	:	Japan
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Keywords	:	no keyword
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Cooperating Institute	:	大阪大学

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Registration No. : BB20071223
JAEA Abstracts No. : 35001317
Paper Submission No. : 2898

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