Structure and Transport Properties of La0.67Ca0.33Mn1-xAlxO3
来源期刊：JOURNAL OF RARE EARTHS2004年第4期
论文作者：张金仓 韩雁冰 葛洪良 崔玉建 贾广强 王新燕
Key words：metal materials; structure and transport properties; Al3+substitution; La0.67Ca0.33MnO3; rare earths;
Abstract: The effects of Al ion doping on the Mn site were studied for the colossal magnetoresistance material La0.67Ca0.33MnO3. It is found that the volume of the crystal cell decreases monotonically when the population of Al3+ increases across the entire doping range. As the Al3+ population increases, the resistance of the material rises rapidly, while the insulator-metal transition temperature TIM decreases linearly. At small Al3+ dosage, a thermal activation model properly describes the transport properties at T>TIM, while a metallic model is more suitable at T
张金仓1，韩雁冰2，葛洪良2，崔玉建2，贾广强1，王新燕1
(1.Department of Physics,Shanghai University,Shanghai 200436,China;
2.Department of Applied Physics,China Institute of Metrology,Hangzhou 310018,China)
Abstract:The effects of Al ion doping on the Mn site were studied for the colossal magnetoresistance material La0.67Ca0.33MnO3. It is found that the volume of the crystal cell decreases monotonically when the population of Al3+ increases across the entire doping range. As the Al3+ population increases, the resistance of the material rises rapidly, while the insulator-metal transition temperature TIM decreases linearly. At small Al3+ dosage, a thermal activation model properly describes the transport properties at T>TIM, while a metallic model is more suitable at T Key words:metal materials; structure and transport properties; Al3+substitution; La0.67Ca0.33MnO3; rare earths; 【全文内容正在添加中】
