Magnetic Coupling in La_(0.67)Ca_(0.33)MnO_3/La_(0.67)Sr_(0.33)CoO_3/La_(0.67)Ca_(0.33)MnO_3 Trilayer Films

【Author】

Zhao Kun Li Hao, Wong Hongkuen~2(1.Magnetoelectronics Laboratory, School of Physics Science and Information Technology, Liaocheng University, Liaocheng 252059, China;2.Department of Physics, Chinese University of Hong Kong, Hong Kong 00852, China)

【Abstract】

The perovskite La_(0.67)Ca_(0.33)MnO_3/La_(0.67)Sr_(0.33)CoO_3/La_(0.67)Ca_(0.33)MnO_3 trilayers were fabricated by a facing-target sputtering technique and their magnetotransport properties were investigated. The magnetoresistance is dependent on spacer thickness and dramatically decreases when La_(0.67)Sr_(0.33)CoO_3 layer is thick enough because of its short-circuiting effect. Different from La_(0.67)Ca_(0.33)MnO_3 single layer, trilayer films with thin La_(0.67)Sr_(0.33)CoO_3 spacer have the enhanced metal-semiconductor transition temperature (T_(MS)) of La_(0.67)Ca_(0.33)MnO_3 layers. The magnetic coercivity H_C shows a nonmonotonic behavior with changing the spacer layer thickness at 230 K. The waist-like hysteresis indicates that there is an indirect exchange coupling between the top and bottom La_(0.67)Ca_(0.33)MnO_3 layers across the spacer La_(0.67)Sr_(0.33)CoO_3 layer.

【Keywords】

colossal magnetoresistance; hysteresis loop; magnetic coupling; rare earths

References

To explore the background and basis of the node document

Springer Journals Database

Total: 14 articles

  • [1] ZhaoK ;ZhouLZ ;LeungCH ,etal, Epitaxialgrowthofoxidefilms(La-Ca-Mn-OandY -Ba-Cu-O)bythefacing targetsputteringtechnique, JournalofCrystalGrowth, Journal of Crystal Growth (Journal of Crystal Growth)
  • [2] ZhaoK ;WongHK, Epitaxialgrowthofplatinumthinfilmsonvarioussubstratesbyfacing targetsputteringtechnique, JournalofCrystalGrowth, Journal of Crystal Growth (Journal of Crystal Growth)
  • [3] DingTZ ;QiQG ;LiJ ,etal, XRDandXPSstudiesonrareearthoxideLSCO/YSZelectrodes, JournalofTheChineseRareEarthSociety,
  • [4] SirenaM ;HaberkornN ;SterenLB ,etal, MagneticcouplingandmagnetoresistanceinLa0.55Sr0.45MnO3/La0.67Ca0.33MnO3 multilayers, J .Appl.Phys,

More>>

Similar documents

Documents that have the similar content to the node document

Springer Journals Database

Total: 67 articles

More>>