Science in China Series A: Mathematics

, Volume 42, Issue 7, pp 750–757 | Cite as

Influence of Fe3+ on perovskite oxides: La2/3Ca1/3Mn1-x Fe x O3

  • Wang Xiaodong 
  • Xu Zuxiong 
  • Ma Ruzhang 


The structure and magnetoresistance properties in sintered samples of La2/3Ca1/3Mn1-x Fe x O3(0≤x≤0.84) are studied by using Mössbauer spectroscopy, XRD and magnetic measurement. There are antiferromagnetic interactions between Fe and its nearest neighbors (Fe, Mn) when 0 <x ≤0.67, which are important factors influencing the double-exchange between Mn3+ and Mn4+, Curie temperature, magnetic moment and GMR. It is suggested that the Mn3+ (Fe3+) /Mn4+ system also consists of magnetic clusters with different sizes.


giant magnetoresistance Mössbauer spectroscopy antiferromagnetic interaction magnetic cluster 


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Copyright information

© Science in China Press 1999

Authors and Affiliations

  • Wang Xiaodong 
    • 1
  • Xu Zuxiong 
    • 2
  • Ma Ruzhang 
    • 2
  1. 1.National Laboratory for Superlattices and Microstructures, Institute of SemiconductorsChinese Academy of SciencesBeijingChina
  2. 2.Department of Materials PhysiosUniversity of Science and Technology BeijingBeijingChina

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