Lattice effects on magnetic and transport properties in La site doping La0.67Sr0.33CoO3

Changjin Zhang; B. H. Kim; J. S. Kim; Y. W. Park

doi:10.1016/j.physleta.2005.07.088

Lattice effects on magnetic and transport properties in La site doping La0.67Sr0.33CoO3

Changjin Zhang
, B. H. Kim
, J. S. Kim
, Y. W. Park

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

15 Scopus citations

Abstract

The lattice effects on the magnetic and transport properties in La _0.67-xGd_xSr_0.33CoO₃ series are studied. The system exhibits a rhombohedrally distorted perovskite structure for x<0.30 and an orthorhombic structure for x>0.30. The introduction of smaller Gd³⁺ ions leads to an enhanced mismatch between the LaO layer and the CoO₂ layer and a decrease of the tolerance factor t. The spin-state of trivalent Co ion is converted to low-spin state with the decrease of CoO bond length. The doping of Gd³⁺ drives the system from the cluster-glass state to the spin-glass state and progressively decreases the Curie temperature. At high Gd³⁺ doping content, an interesting negative magnetoresistance occurs at low temperature. © 2005 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	58-65
Number of pages	8
Journal	Physics Letters A
Volume	348
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physleta.2005.07.088
State	Published - Dec 19 2005
Externally published	Yes

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title = "Lattice effects on magnetic and transport properties in La site doping La0.67Sr0.33CoO3",

abstract = "The lattice effects on the magnetic and transport properties in La 0.67-xGdxSr0.33CoO3 series are studied. The system exhibits a rhombohedrally distorted perovskite structure for x<0.30 and an orthorhombic structure for x>0.30. The introduction of smaller Gd3+ ions leads to an enhanced mismatch between the LaO layer and the CoO2 layer and a decrease of the tolerance factor t. The spin-state of trivalent Co ion is converted to low-spin state with the decrease of CoO bond length. The doping of Gd3+ drives the system from the cluster-glass state to the spin-glass state and progressively decreases the Curie temperature. At high Gd3+ doping content, an interesting negative magnetoresistance occurs at low temperature. {\textcopyright} 2005 Elsevier B.V. All rights reserved.",

author = "Changjin Zhang and Kim, \{B. H.\} and Kim, \{J. S.\} and Park, \{Y. W.\}",

year = "2005",

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doi = "10.1016/j.physleta.2005.07.088",

language = "English",

volume = "348",

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journal = "Physics Letters A",

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TY - JOUR

T1 - Lattice effects on magnetic and transport properties in La site doping La0.67Sr0.33CoO3

AU - Zhang, Changjin

AU - Kim, B. H.

AU - Kim, J. S.

AU - Park, Y. W.

PY - 2005/12/19

Y1 - 2005/12/19

N2 - The lattice effects on the magnetic and transport properties in La 0.67-xGdxSr0.33CoO3 series are studied. The system exhibits a rhombohedrally distorted perovskite structure for x<0.30 and an orthorhombic structure for x>0.30. The introduction of smaller Gd3+ ions leads to an enhanced mismatch between the LaO layer and the CoO2 layer and a decrease of the tolerance factor t. The spin-state of trivalent Co ion is converted to low-spin state with the decrease of CoO bond length. The doping of Gd3+ drives the system from the cluster-glass state to the spin-glass state and progressively decreases the Curie temperature. At high Gd3+ doping content, an interesting negative magnetoresistance occurs at low temperature. © 2005 Elsevier B.V. All rights reserved.

AB - The lattice effects on the magnetic and transport properties in La 0.67-xGdxSr0.33CoO3 series are studied. The system exhibits a rhombohedrally distorted perovskite structure for x<0.30 and an orthorhombic structure for x>0.30. The introduction of smaller Gd3+ ions leads to an enhanced mismatch between the LaO layer and the CoO2 layer and a decrease of the tolerance factor t. The spin-state of trivalent Co ion is converted to low-spin state with the decrease of CoO bond length. The doping of Gd3+ drives the system from the cluster-glass state to the spin-glass state and progressively decreases the Curie temperature. At high Gd3+ doping content, an interesting negative magnetoresistance occurs at low temperature. © 2005 Elsevier B.V. All rights reserved.

UR - https://www.scopus.com/pages/publications/27944498638

U2 - 10.1016/j.physleta.2005.07.088

DO - 10.1016/j.physleta.2005.07.088

M3 - Article

SN - 0375-9601

VL - 348

SP - 58

EP - 65

JO - Physics Letters A

JF - Physics Letters A

IS - 1-2

ER -

Lattice effects on magnetic and transport properties in La site doping La0.67Sr0.33CoO3

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