Exchange biasing and low-field magnetoresistance in La0.67Ca0.33MnO3/La0.5Ca 0.5MnO3 bilayers

H. B. Peng, X. X. Zhang, Z. Xie, H. J. Tao, B. Xu, H. Liu, B. R. Zhao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Exchange biasing and magnetoresistance (MR) behaviors have been investigated in La0.67Ca0.33MnO3/La0.5Ca 0.5MnO3 bilayers with specially designed interfacial structures. The exchange coupling is found to be strongly related to interfacial structures. Exchange field HE decreases as the cooling field Hfc increases at high Hfc region. Especially, the coercivity HC is enhanced by exchange coupling for bilayers with rough interface, while it is reduced for relatively smooth interface. Also, large low-field MR has been achieved by introducing regular in-plane grain boundaries, and a biasing of R-H loop has been observed.

Original languageEnglish (US)
Pages (from-to)8955-8959
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume61
Issue number13
StatePublished - Apr 1 2000
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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