【摘 要】
：
利用分子动力学方法结合有效的对势,模拟了下地幔条件下钙钛矿结构MgSiO3的熔化曲线研究表明,分子动力学模拟结果精确地再现了广泛压强范围内钙钛矿结构MgSiO3的状态方程,并
【机 构】
：
兰州师范高等专科学校电子信息科学与技术研究所,四川大学原子与分子物理研究所,兰州交通大学数理学院
【基金项目】
：
甘肃省教育厅资助项目;国家自然科学基金;甘肃省自然科学基金
论文部分内容阅读
利用分子动力学方法结合有效的对势,模拟了下地幔条件下钙钛矿结构MgSiO3的熔化曲线研究表明,分子动力学模拟结果精确地再现了广泛压强范围内钙钛矿结构MgSiO3的状态方程,并且熔化曲线与最新的实验结果也符合的很好.在压强上升到下地幔压强范围内,压强低于60 GPa时的钙钛矿结构MgSiO3熔化曲线比较陡,接着变得平缓.在核幔边界压强135 GPa时,钙钛矿结构MgSiO3的熔化温度是6500 K,明显低于Zerr和Boehler实验结果的外推结果.
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