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29 November 2021
 
  » arxiv » cond-mat/0508733

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Field induced first order antiferromagnetic to ferromagnetic transition in Al-doped CeFe$_2$: a calorimetric investigation
L.S. Sharath Chandra ; Kaustav Mukherjee ; V. Ganesan ; A. Banerjee ; P. Chaddah ; M.K. Chattopadhyay ; S.B. Roy ;
Date 30 Aug 2005
Subject Strongly Correlated Electrons | cond-mat.str-el
AbstractField variation of heat capacity at fixed temperatures is investigated to identify the origin of the field induced first order phase transition in polycrystalline Ce(Fe$_{0.094}$Al$_{0.04}$)$_2$ sample. The heat capacity at 4.5K and 3.5K shows hysteresis in different field cycles and the virgin curve stays outside the envelope curve. This is analogous to the magnetization and magneto-resistance behavior observed in this system, where the amount of hysteresis, and the magnitude of zero-field irreversibility are attributed to the degree of supercooling/superheating, and the extent of kinetic arrest of the reverse transition from ferro- to antifrromagnetic state in field reducing cycle respectively. However, contrary to the magnetization and magneto-resistance, in heat capacity both these features have decreased with reducing temperature signifying the importance of structural contribution.
Source arXiv, cond-mat/0508733
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