首页> 外文期刊>Journal of Low Temperature Physics >Hysteretic Response of Torsionally Oscillated Solid 4He and Its Dependence on 3He Impurity Concentration
【24h】

Hysteretic Response of Torsionally Oscillated Solid 4He and Its Dependence on 3He Impurity Concentration

机译:扭转振荡的固体4He的磁滞响应及其对3He杂质浓度的依赖性

获取原文
获取原文并翻译 | 示例

摘要

Measurements on hysteretic response of compound torsional oscillator containing annular-shaped solid 4He samples were carried out by varying the oscillator drive amplitude starting from high to low and then back up to the initial high value. Hysteresis in the oscillator frequency and amplitudes were observed only below an onset temperature. The hysteresis onset temperature (T H ) did not depend on the oscillator frequency, width of the sample annulus, annealing and refreezing after melting. A systematic increase in T H was observed as the 3He impurity concentration in solid 4He samples was increased. The dependence of T H on 3He impurity concentration followed approximately that of the dissipation peak temperatures. Possible relationships of the observed hysteresis phenomena with models of solid 4He dynamics based on freezing of a vortex liquid and dislocation motion are discussed.
机译:通过将振荡器的驱动振幅从高变低,然后再变回初始的高值,对包含环形固体4 He样品的复合扭转振荡器的滞后响应进行测量。仅在低于开始温度时才观察到振荡器频率和幅度的滞后现象。磁滞起始温度(T H )不取决于振荡器的频率,样品环的宽度,熔化后的退火和再冻结。随着固体4 He样品中3 He杂质浓度的增加,观察到T H 的系统增加。 T H 对3 He杂质浓度的依赖性大致遵循耗散峰温度的依赖性。讨论了观察到的磁滞现象与基于涡旋液体冻结和位错运动的固体4 He动力学模型的可能关系。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号