Effect of simultaneous application of magnetic field and pressure on magnetic transitions in La0.5Ca0.5MnO3

Dash, S. ; Kumar, Kranti ; Banerjee, A. ; Chaddah, P. (2010) Effect of simultaneous application of magnetic field and pressure on magnetic transitions in La0.5Ca0.5MnO3 Physical Review B: Condensed Matter and Materials Physics, 82 (17). 172412 _1-172412 _4. ISSN 1098-0121

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Official URL: http://prb.aps.org/abstract/PRB/v82/i17/e172412

Related URL: http://dx.doi.org/10.1103/PhysRevB.82.172412

Abstract

We study combined effect of hydrostatic pressure and magnetic field on the magnetization of La0.5Ca0.5MnO3. We do not observe any significant effect of pressure on the paramagnetic to ferromagnetic transition. However, pressure asymmetrically affects the thermal hysteresis across the ferromagnetic-antiferromagnetic first-order transition, which has strong field dependence. Though the supercooling (T∗∗) and superheating (T∗ ∗) temperatures decrease and the value of magnetization at 5 K (M5 K) increases with pressure, T and M5 K shows abrupt changes in tiny pressure of 0.68 kbar. These anomalies enhance with field. In 7 T field, transition to antiferromagnetic phase disappears in 0.68 kbar and M5 K show significant increase. Thereafter, increase in pressure up to ~10 kbar has no noticeable effect on the magnetization.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:84447
Deposited On:28 Feb 2012 03:50
Last Modified:28 Feb 2012 03:50

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