New advanced magnetic La1.2(Sr1.8-xCax)Mn2O7 compounds with colossal magnetoresistance

R. S. Liu, C. H. Shen, S. F. Hu, J. G. Lin, C. Y. Huang

研究成果: 雜誌貢獻會議論文同行評審

4 引文 斯高帕斯(Scopus)

摘要

We present electrical, magnetic and crystal structure for a series of La1.2(Sr1.8-xCax)Mn2O7 (x = 0-0.8) manganites. The sample of x = 0.4 exhibits the highest magnetoresistance (MR) ratio [ρ(H)-ρ(O)/ρ(H)]×100% of -108% at the temperature of 102 K. The Curie temperature (TC) decreases from 135 K for x = 0-102 K for x = 0.4. The hysteresis phenomenon was observed when the temperatures were lower than the magnetic transition temperature. The static strain within the compound for x = 0.4 has also been found by high-resolution transmission electron microscopic techniques.

原文英語
頁(從 - 到)113-115
頁數3
期刊Journal of Magnetism and Magnetic Materials
209
發行號1-3
DOIs
出版狀態已發佈 - 2000 二月
事件Proceedings of the 1999 International Symposium on Advanced Magnetic Technologies (ISAMT'99) - Taipei, Taiwan
持續時間: 1999 五月 241999 五月 25

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學

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