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

doi:10.1103/PhysRevB.84.144401

Neutron scattering study of magnetic phase separation in nanocrystalline La_5/8Ca_3/8MnO₃

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

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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 La_1-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 _5/8Ca_3/8MnO₃. 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 language	English
Article number	144401
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	84
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.84.144401
State	Published - Oct 3 2011

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title = "Neutron scattering study of magnetic phase separation in nanocrystalline La5/8Ca3/8MnO3",

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.",

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T1 - Neutron scattering study of magnetic phase separation in nanocrystalline La5/8Ca3/8MnO3

AU - Dhital, Chetan

AU - De La Cruz, Clarina

AU - Opeil, C.

AU - Treat, A.

AU - Wang, K. F.

AU - Liu, J. M.

AU - Ren, Z. F.

AU - Wilson, Stephen D.

PY - 2011/10/3

Y1 - 2011/10/3

N2 - 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.

AB - 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.

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DO - 10.1103/PhysRevB.84.144401

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JO - Physical Review B - Condensed Matter and Materials Physics

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ER -

Neutron scattering study of magnetic phase separation in nanocrystalline La_5/8Ca_3/8MnO₃

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