Journal
PHYSICS LETTERS A
Volume 380, Issue 38, Pages 3107-3110Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2016.06.056
Keywords
Manganite; Phase separation; Ferromagnetism; Magnetostriction
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Funding
- bilateral cooperation FAPERJ-CONICET
- CNPq
- CAPES (Science without borders program)
- Brazilian Synchrotron Light Laboratory (LNLS)
- Engineering and Physical Sciences Research Council [EP/G060940/1] Funding Source: researchfish
- EPSRC [EP/G060940/1] Funding Source: UKRI
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We investigate a series of manganese oxides, the La0.225Pr0.4(Ca1-xSrx)(0.375)MnO3 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. (C) 2016 Elsevier B.V. All rights reserved.
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