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Titolo:
Spin reorientation in MnBi
Autore:
Yoshida, H; Shima, T; Takahashi, T; Fujimori, H; Abe, S; Kaneko, T; Kanomata, T; Suzuki, T;
Indirizzi:
Tohoku Univ, Mat Res Inst, Aoba Ku, Sendai, Miyagi 9808577, Japan Tohoku Univ Sendai Miyagi Japan 9808577 Ku, Sendai, Miyagi 9808577, Japan Tohoku Gakuin Univ, Fac Engn, Tagajo, Miyagi 9858537, Japan Tohoku Gakuin Univ Tagajo Miyagi Japan 9858537 ajo, Miyagi 9858537, Japan
Titolo Testata:
JOURNAL OF ALLOYS AND COMPOUNDS
, volume: 317, anno: 2001,
pagine: 297 - 301
SICI:
0925-8388(20010412)317:<297:SRIM>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Keywords:
MnBi; ferromagnet; spin reorientation; pressure effect; thermal expansion; permeability;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Yoshida, H Tohoku Univ, Mat Res Inst, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan Tohoku Univ 2-1-1 Katahira Sendai Miyagi Japan 9808577 7, Japan
Citazione:
H. Yoshida et al., "Spin reorientation in MnBi", J ALLOY COM, 317, 2001, pp. 297-301

Abstract

High purity MnBi was prepared by arc-melting under He gas. The prepared samples have the property of being hard to oxidize in air and progress of oxidation was not observed by X-ray diffraction 1 year later. It is easy to pulverize a good quality sample into powder even in air. We confirmed that coercive force at room temperature depends on the powder size and takes a value of S kOe for less than 400 mesh. The permeability has a hysteresis in a temperature range between 77 and 300 K and exhibits a maximum at 100 It corresponding to the spin reorientation temperature T,. The pressure (P) dependence of I; was examined by measuring the permeability at various pressures. The value of dT(t)/dP was obtained to be 9.6 K/kbar. The results of thermal expansion revealed that both the lattice parameters a and c increase abruptly near 250 K. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 03/07/20 alle ore 16:44:53