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arXiv · 1602.08597

Coupled magnetic and elastic properties in LaPr(CaSr)MnO manganites

G. G. Eslava·F. Parisi·P. L. Bernardo·M. Quintero·G. Leyva·L. F. Cohen·L. Ghivelder
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Abstract

We investigate a series of manganese oxides, the La0.225Pr0.4(Ca1-xSrx)0.375MnO3 system. The x = 0 sample is a prototype compound for the study of phase separation in manganites, where ferromagnetic and charge ordered antiferromagnetic phases coexist. Replacing Ca2+ by Sr2+ gradually turns the system into a homogeneous ferromagnet. Our results show that the material structure plays a major role in the observed magnetic properties. On cooling, at temperatures below 100 K, a strong contraction of the lattice is followed by an increase in the magnetization. This is observed both through thermal expansion and magnetostriction measurements, providing distinct evidence of magneto-elastic coupling in these phase separated compounds.

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G. G. Eslava, F. Parisi, P. L. Bernardo, M. Quintero, G. Leyva, L. F. Cohen, L. Ghivelder. 2016-02-27. Coupled magnetic and elastic properties in LaPr(CaSr)MnO manganites. https://doi.org/10.1016/j.physleta.2016.06.056

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