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arXiv · 1209.3177

Concentration dependence in kinetic arrest of first order magnetic transition in Ta doped $HfFe_2$

R. Rawat·P. Chaddah·Pallab Bag·P. D. Babu·V. Siruguri
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Abstract

Magnetic behavior of the pseudo-binary alloy $Hf_{1-x}Ta_xFe_2$ has been studied, for which the zero field ferromagnetic (FM) to antiferromagnetic (AFM) transition temperature is tuned near to T=0 K. These alloys show anomalous thermomagnetic irreversibility at low temperature due to kinetic arrest of the first order AFM-FM transition. All the three studied compositions show re-entrant transition in zero field cooled warming curve and anomalous non-monotonic variation of upper critical field in isothermal magnetization. The region in H-T space, where these features of kinetic arrest manifest themselves, increases with increasing Ta concentration.

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R. Rawat, P. Chaddah, Pallab Bag, P. D. Babu, V. Siruguri. 2012-09-14. Concentration dependence in kinetic arrest of first order magnetic transition in Ta doped $HfFe_2$. https://doi.org/10.1088/0953-8984%2F25%2F6%2F066011

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