MISC

2008年9月

Unusual metamagnetic transitions in Pr(0.5)Ca(0.5)Mn(0.97)Ga(0.03)O(3) studied by pulsed magnetic fields

PHYSICAL REVIEW B
  • Z. W. Ouyang
  • ,
  • H. Nojiri
  • ,
  • S. Yoshii

78
10
開始ページ
104404
終了ページ
記述言語
英語
掲載種別
DOI
10.1103/PhysRevB.78.104404
出版者・発行元
AMER PHYSICAL SOC

Several unusual and intriguing magnetic phenomena have been observed in the Ga-doped manganite Pr(0.5)Ca(0.5)Mn(0.97)Ga(0.03)O(3). First, at 2.5 K, the magnetization steps and plateaus observed in the conventional M(H) measurements with a sweep rate of less than 1 T/s are readily suppressed under an ultrafast magnetic field with a sweep rate of similar to 10(3) T/s. This feature is correlated with the collapse of the balance between the magnetic energy and the elastic energy within the martensiticlike scenario. Second, the zero-field cooled M(H) curve consists of two metamagnetic features, which were not observed in the conventional low-field magnetization measurements and might be associated with the coexistence of the pseudo-CE-type and the CE-type antiferromagnetic phases. Third, both the antiferromagnetic and ferromagnetic phases may coexist under certain combinations of the magnetic field and temperature. The temperature-field phase diagram exhibits a minimum critical field for the antiferromagnetic to ferromagnetic transition. Similarities with other magnetic phase-separated systems are pointed out.

リンク情報
DOI
https://doi.org/10.1103/PhysRevB.78.104404
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000259690400053&DestApp=WOS_CPL
ID情報
  • DOI : 10.1103/PhysRevB.78.104404
  • ISSN : 1098-0121
  • Web of Science ID : WOS:000259690400053

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