Chemical control of colossal magnetoresistance in manganites

Chih Hung Shen, Ru Shi Liu, Ravi Gundakaram, Shu Fen Hu, Jauyn Grace Lin, Chao Yuan Huang, Chien Min Wang

研究成果: 雜誌貢獻期刊論文同行評審

1 引文 斯高帕斯(Scopus)

摘要

The evolution of the structural, electrical and magnetic properties with the isovalent chemical substitution of Ca2+ into the Sr2+ sites in the new series of two-dimensional La1.2(Sr1.8-xCax)Mn2 O7 samples (0 ≤ x ≤ 0.8) and three-dimensional La0.6(Sr0.4-xCax)MnO3 samples (0 ≤ x ≤ 0.4) has been investigated. The compositional dependence of the structural variation has been found in La0.6(Sr0.4-xCax)MnO3. The Curie temperatures (TC) decreased from 135 to 102K and 370 to 270K for x = 0-0.4 in La1.2(Sr1.8-xCax)Mn2 O7 and La0.6(Sr0.4-xCax)MnO3, respectively. Our results confirm that the dimensionality as well as ionic size plays an important role in controlling the colossal magnetoresistance in manganites.

原文英語
頁(從 - 到)281-285
頁數5
期刊Materials Chemistry and Physics
72
發行號2
DOIs
出版狀態已發佈 - 2001 十一月 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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