透過您的圖書館登入
IP:18.225.31.159
  • 期刊
  • OpenAccess

The Effects of Heat Treatment on the Electronic Transport of La1.4Sr1.6Mn2O7+δ and La0.67Ca0.33MnO3+δ

並列摘要


We report measurements of thermopower and resistivity for La1.4Sr1.6Mn2O7+δ and La0.67Ca0.33MnO3+δ ceramics treated in different temperatures and atmosphere. Chemical titration is used to determine both of the average valence of manganese and content of oxygen. As the samples are annealed at lower temperatures, the resistivities of both La1.4Sr1.6Mn2O7+δ and La0.67Ca0.33MnO3+δ reduce in magnitude. The effect of nitrogen-annealing leads to a reduction of the resistivity for La1.4Sr1.6Mn2O7+δ but an increase for La0.67Ca0.33MnO3+δ. Thermopower data suggest more than one type of carrier existing in the system. Transport data seem to support the polaron hopping in the high temperature regime.

並列關鍵字

無資料

被引用紀錄


陸偉輝(2002)。建構台灣檢驗LOINC編碼及轉換機制之研究〔碩士論文,臺北醫學大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0007-1704200714505262

延伸閱讀