Resistivity and critical temperature of (La1-xPrx)0.7Ca0.3MnO3

• 来源期刊: 中国物理（英文版）
• 关键词: Monte Carlo simulation method colossal magnetoresistance phase separation hysteresis effect
• 年，卷（期）: 2006,（10）
• 页码范围: 2427-2430
• 页数: 4页
• 语种: 英文

摘要

An empirical formula of the critical temperature that is concentration dependent for polycrystalline (La1-xPrx)0.7Ca0.3MnO3 is presented in this paper. With this formula, the temperature dependence of resistance is simulated for various values of x by using the random resistor network model and the Monte Carlo method. The hysteresis effect in ρ - T curves is reasonably explained. The simulation results are in good agreement with the relevant experimental measurements.