Macroscopic phase separation in layered manganite induced by a surface effect

J. Dho; W. S. Kim; H. S. Choi; E. O. Chi; N. H. Hur

doi:10.1016/S0038-1098(00)00512-3

Macroscopic phase separation in layered manganite induced by a surface effect

J. Dho, W. S. Kim, H. S. Choi, E. O. Chi, N. H. Hur

Department of Physics

Korea Research Institute of Standards and Science

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We report on the origin of the perovskite phase intergrown in the layered manganite, Sr_1.6La_1.4Mn₂O₇. X-ray powder diffraction, magnetization, and transport measurements on the Sr_1.6La_1.4Mn₂O₇ materials prepared under various conditions show that the perovskite phase is grown predominantly on the surface region in contact with either air or the substrate. With intermediate grinding and sintering the perovskite impurity increases rather than transforms to Sr_1.6La_1.4Mn₂O₇. The results provide important information for the understanding of the layered manganite system in which the compositional fluctuation occurs naturally due to the intergrown perovskite phase.

Original language	English
Pages (from-to)	517-521
Number of pages	5
Journal	Solid State Communications
Volume	117
Issue number	9
DOIs	https://doi.org/10.1016/S0038-1098(00)00512-3
State	Published - 13 Feb 2001

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title = "Macroscopic phase separation in layered manganite induced by a surface effect",

abstract = "We report on the origin of the perovskite phase intergrown in the layered manganite, Sr1.6La1.4Mn2O7. X-ray powder diffraction, magnetization, and transport measurements on the Sr1.6La1.4Mn2O7 materials prepared under various conditions show that the perovskite phase is grown predominantly on the surface region in contact with either air or the substrate. With intermediate grinding and sintering the perovskite impurity increases rather than transforms to Sr1.6La1.4Mn2O7. The results provide important information for the understanding of the layered manganite system in which the compositional fluctuation occurs naturally due to the intergrown perovskite phase.",

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AU - Dho, J.

AU - Kim, W. S.

AU - Choi, H. S.

AU - Chi, E. O.

AU - Hur, N. H.

PY - 2001/2/13

Y1 - 2001/2/13

N2 - We report on the origin of the perovskite phase intergrown in the layered manganite, Sr1.6La1.4Mn2O7. X-ray powder diffraction, magnetization, and transport measurements on the Sr1.6La1.4Mn2O7 materials prepared under various conditions show that the perovskite phase is grown predominantly on the surface region in contact with either air or the substrate. With intermediate grinding and sintering the perovskite impurity increases rather than transforms to Sr1.6La1.4Mn2O7. The results provide important information for the understanding of the layered manganite system in which the compositional fluctuation occurs naturally due to the intergrown perovskite phase.

AB - We report on the origin of the perovskite phase intergrown in the layered manganite, Sr1.6La1.4Mn2O7. X-ray powder diffraction, magnetization, and transport measurements on the Sr1.6La1.4Mn2O7 materials prepared under various conditions show that the perovskite phase is grown predominantly on the surface region in contact with either air or the substrate. With intermediate grinding and sintering the perovskite impurity increases rather than transforms to Sr1.6La1.4Mn2O7. The results provide important information for the understanding of the layered manganite system in which the compositional fluctuation occurs naturally due to the intergrown perovskite phase.

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VL - 117

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JO - Solid State Communications

JF - Solid State Communications

IS - 9

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Macroscopic phase separation in layered manganite induced by a surface effect

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