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arXiv · 1007.3614

Effect of simultaneous application of field and pressure on magnetic transitions in La${_{0.5}}$Ca${_{0.5}}$MnO${_{3}}$

S. Dash·Kranti Kumar·A. Banerjee·P. Chaddah
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Abstract

We study combined effect of hydrostatic pressure and magnetic field on the magnetization of La${_{0.5}}$Ca${_{0.5}}$MnO${_{3}}$. We do not observe any significant effect of pressure on the paramagnetic to ferromagnetic transition. However, pressure asymmetrically affects the thermal hysteresis across the ferro-antiferromagnetic first-order transition, which has strong field dependence. Though the supercooling (T*) and superheating (T**) temperatures decrease and the value of magnetization at 5K (M$_{5K}$) increases with pressure, T* and M$_{5K}$ shows abrupt changes in tiny pressure of 0.68kbar. These anomalies enhance with field. In 7Tesla field, transition to antiferromagnetic phase disappears in 0.68kbar and M$_{5K}$ show significant increase. Thereafter, increase in pressure up to $\sim$10kbar has no noticeable effect on the magnetization.

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S. Dash, Kranti Kumar, A. Banerjee, P. Chaddah. 2010-07-21. Effect of simultaneous application of field and pressure on magnetic transitions in La${_{0.5}}$Ca${_{0.5}}$MnO${_{3}}$. https://doi.org/10.1103/physrevb.82.172412

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