Magnetoresistance of La0.7Ca0.3MnO3 thin film biepitaxial step junctions

S. F. Chen; W. J. Chang; S. J. Liu; J. Y. Juang; J. Y. Lin; K. H. Wu; T. M. Uen; Y. S. Gou

doi:10.1016/S0921-4526(03)00261-8

Magnetoresistance of La_0.7Ca_0.3MnO₃ thin film biepitaxial step junctions

S. F. Chen^*
, W. J. Chang
, S. J. Liu
, J. Y. Juang
, J. Y. Lin
, K. H. Wu
, T. M. Uen
, Y. S. Gou

^*此作品的通信作者

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

3 引文斯高帕斯（Scopus）

摘要

The biepitaxial La_0.7Ca_0.3MnO₃ (LCMO) thin films grown on SrTiO₃ substrates using a buffer layer of anatase TiO₂ were fabricated. The magnetoresistance (MR) of biepitaxial step junction (BSJ) across the boundary layer of biepitaxial LCMO (0 0 1) and LCMO (1 1 0) film was investigated. The temperature and field dependence of MR for BSJ are qualitatively similar to those obtained in other type of artificial grain boundaries with a comparable MR ratio at low temperatures. However, the observed linear current-voltage characteristic across BSJ is in sharp contrary to the commonly reported non-ohmic characteristics. The results are consistent with features predicted by the model of spin-dependent transport across a depressed magnetic ordering and metallic-like junction layer.

原文	英語
頁（從 - 到）	267-274
頁數	8
期刊	Physica B: Condensed Matter
卷	336
發行號	3-4
DOIs	https://doi.org/10.1016/S0921-4526(03)00261-8
出版狀態	已發佈 - 2003 8月
對外發佈	是

ASJC Scopus subject areas

電子、光磁材料
凝聚態物理學
電氣與電子工程

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10.1016/S0921-4526(03)00261-8

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@article{42741f91b8b04e6884b48b3a6e294f28,

title = "Magnetoresistance of La0.7Ca0.3MnO3 thin film biepitaxial step junctions",

abstract = "The biepitaxial La0.7Ca0.3MnO3 (LCMO) thin films grown on SrTiO3 substrates using a buffer layer of anatase TiO2 were fabricated. The magnetoresistance (MR) of biepitaxial step junction (BSJ) across the boundary layer of biepitaxial LCMO (0 0 1) and LCMO (1 1 0) film was investigated. The temperature and field dependence of MR for BSJ are qualitatively similar to those obtained in other type of artificial grain boundaries with a comparable MR ratio at low temperatures. However, the observed linear current-voltage characteristic across BSJ is in sharp contrary to the commonly reported non-ohmic characteristics. The results are consistent with features predicted by the model of spin-dependent transport across a depressed magnetic ordering and metallic-like junction layer.",

keywords = "Biepitaxial step junction, Grain boundary, LCMO, Magnetoresistance",

author = "Chen, \{S. F.\} and Chang, \{W. J.\} and Liu, \{S. J.\} and Juang, \{J. Y.\} and Lin, \{J. Y.\} and Wu, \{K. H.\} and Uen, \{T. M.\} and Gou, \{Y. S.\}",

note = "Funding Information: This work was supported by the National Science Council of Taiwan, ROC under Grant Nos: NSC 91-2112-M-009-041 and NSC 91-2212-M-009-046.",

year = "2003",

month = aug,

doi = "10.1016/S0921-4526(03)00261-8",

language = "English",

volume = "336",

pages = "267--274",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier BV",

number = "3-4",

}

TY - JOUR

T1 - Magnetoresistance of La0.7Ca0.3MnO3 thin film biepitaxial step junctions

AU - Chen, S. F.

AU - Chang, W. J.

AU - Liu, S. J.

AU - Juang, J. Y.

AU - Lin, J. Y.

AU - Wu, K. H.

AU - Uen, T. M.

AU - Gou, Y. S.

N1 - Funding Information: This work was supported by the National Science Council of Taiwan, ROC under Grant Nos: NSC 91-2112-M-009-041 and NSC 91-2212-M-009-046.

PY - 2003/8

Y1 - 2003/8

N2 - The biepitaxial La0.7Ca0.3MnO3 (LCMO) thin films grown on SrTiO3 substrates using a buffer layer of anatase TiO2 were fabricated. The magnetoresistance (MR) of biepitaxial step junction (BSJ) across the boundary layer of biepitaxial LCMO (0 0 1) and LCMO (1 1 0) film was investigated. The temperature and field dependence of MR for BSJ are qualitatively similar to those obtained in other type of artificial grain boundaries with a comparable MR ratio at low temperatures. However, the observed linear current-voltage characteristic across BSJ is in sharp contrary to the commonly reported non-ohmic characteristics. The results are consistent with features predicted by the model of spin-dependent transport across a depressed magnetic ordering and metallic-like junction layer.

AB - The biepitaxial La0.7Ca0.3MnO3 (LCMO) thin films grown on SrTiO3 substrates using a buffer layer of anatase TiO2 were fabricated. The magnetoresistance (MR) of biepitaxial step junction (BSJ) across the boundary layer of biepitaxial LCMO (0 0 1) and LCMO (1 1 0) film was investigated. The temperature and field dependence of MR for BSJ are qualitatively similar to those obtained in other type of artificial grain boundaries with a comparable MR ratio at low temperatures. However, the observed linear current-voltage characteristic across BSJ is in sharp contrary to the commonly reported non-ohmic characteristics. The results are consistent with features predicted by the model of spin-dependent transport across a depressed magnetic ordering and metallic-like junction layer.

KW - Biepitaxial step junction

KW - Grain boundary

KW - LCMO

KW - Magnetoresistance

UR - https://www.scopus.com/pages/publications/0038447182

UR - https://www.scopus.com/pages/publications/0038447182#tab=citedBy

U2 - 10.1016/S0921-4526(03)00261-8

DO - 10.1016/S0921-4526(03)00261-8

M3 - Article

AN - SCOPUS:0038447182

SN - 0921-4526

VL - 336

SP - 267

EP - 274

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 3-4

ER -

Magnetoresistance of La0.7Ca0.3MnO3 thin film biepitaxial step junctions

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ASJC Scopus subject areas

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Magnetoresistance of La_0.7Ca_0.3MnO₃ thin film biepitaxial step junctions