Sarkar, P. ; Mandal, P. ; Bera, A. K. ; Yusuf, S. M. ; Sharath Chandra, L. S. ; Ganesan, V. (2008) Field-induced first-order to second-order magnetic phase transition in Sm0.52Sr0.48MnO3 Physical Review B, 78 (1). Article ID 012415. ISSN 0163-1829
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Official URL: https://journals.aps.org/prb/abstract/10.1103/Phys...
Related URL: http://dx.doi.org/10.1103/PhysRevB.78.012415
Abstract
We report on the magnetic field (H) dependence of the order of the ferromagnetic (FM) to paramagnetic (PM) phase transition in Sm0.52Sr0.48MnO3 single crystal. For H < 4 T, magnetization and specific-heat data show a first-order phase transition, with sharp drop of magnetization along with hysteresis, and large, symmetric, and narrow specific-heat peak with finite amount of entropy change at TC. By contrast, for H ≥ 4 T, the phase transition becomes essentially second-order with tricritical point exponents β∼0.32 and ϒ∼1.31. The tricritical point separates first-order (H < 4 T) from second-order (H ≥ 4 T) transition.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 112340 |
| Deposited On: | 01 Dec 2017 12:11 |
| Last Modified: | 01 Dec 2017 12:11 |
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