【摘要】 利用综合物性测量系统(PPMS)测试研究了两个不同测温范围和不同温度灵敏度的ZrN_xO_y薄膜温度传感器在低温强磁场下磁阻随磁感应强度和角度的变化规律。通过等温磁场扫描,发现两温度传感器在不同温度下本征磁阻随磁感应强度的非单调变化和高磁场下的正负磁阻转变行为。在14 T固定磁场下,测试并分析了两种温度传感器电阻在0—360°磁场角度范围内的变化规律。结果显示,其电阻与磁场角度的关系均呈现出独特的“蝴蝶结”状依赖性,且其形状和幅度随温度及传感器类型呈现规律性变化。此外,还进一步分析了磁场引起的温度测量偏差。更多还原

【Abstract】 To investigate the magnetic induction and angular dependence of magnetoresistance(MR)of two types of ZrN_xO_y thin-film low-temperature thermometers with different operating temperature ranges and sensitivities under low temperatures and strong magnetic fields,the non-monotonic dependences of intrinsicMRon magnetic induction at different temperatures for both thermometer types were revealed through isothermal magnetic field sweeps based on physical property measurement system(PPMS),exhibiting a crossover between positive and negativeMR,influenced by both temperature and thermometer type. Innovatively,the angular dependences of resistance over a magnetic field angle range of 0-360°exhibits a unique bowtie-shaped pattern at a fixed magnetic field of 14 T,with differences in shape and amplitude observed between different temperatures and thermometer types. The magnetic field angle induced temperature deviations were further analyzed.更多还原