Volume 79, Number 4, August 2007
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||25 July 2007|
Low-temperature magnetic response of MnSi: Thermomagnetic history effects, metamagnetic transition and the kinetic arrest of the reverse transition
Magnetic and Superconducting Materials Section, Raja Ramanna Centre for Advanced Technology Indore 452013, India
Accepted: 29 June 2007
We report results of dc magnetization measurements in the intermetallic compound MnSi, highlighting a magnetic-fieldinduced metamagnetic transition and thermomagnetic history effects. The metamagnetic transition is found to be irreversible in nature; in the field reducing cycle the sample does not go back to the original zero-field cooled magnetic state. We interpret this result in terms of kinetic arrest of the reverse phase transition from the field-induced higher-field magnetic state, and draw analogy with the similar phenomenon observed recently in various classes of magnetic materials including CMR manganites.
PACS: 75.30.Kz – Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.)
© Europhysics Letters Association, 2007
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