Neutron scattering study of magnetic phase separation in nanocrystalline La5/8Ca3/8MnO3

Chetan Dhital, Clarina De La Cruz, C. Opeil, A. Treat, K. F. Wang, J. M. Liu, Z. F. Ren, Stephen D. Wilson

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We demonstrate that magnetic phase separation and competing spin order in the colossal magnetoresistive (CMR) manganites can be directly explored via tuning strain in bulk samples of nanocrystalline La1-xCa xMnO3. Our results show that strain can be reversibly frozen into the lattice in order to stabilize coexisting antiferromagnetic domains within the nominally ferromagnetic metallic state of La 5/8Ca3/8MnO3. The measurement of tunable phase separation via magnetic neutron powder diffraction presents a direct route of exploring the correlated spin properties of phase separated charge/magnetic order in highly strained CMR materials and opens a potential avenue for realizing intergrain spin tunnel junction networks with enhanced CMR behavior in a chemically homogeneous material.

Original languageEnglish
Article number144401
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number14
DOIs
StatePublished - Oct 3 2011

Funding

FundersFunder number
National Science Foundation
Directorate for Mathematical and Physical Sciences1056625

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