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首页> 外文期刊>Physica, C. Superconductivity and its applications >Investigation on three internal friction peaks at low temperature in Ni doped YBa2Cu3O7-delta
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Investigation on three internal friction peaks at low temperature in Ni doped YBa2Cu3O7-delta

机译：掺Ni的YBa2Cu3O7-δ中三个低温内耗峰的研究

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Internal friction measurements were performed on seven Ni doped YBCO samples from 100 to 300K. Three peaks are observed in temperature dependence of internal friction. One is located at about 220K(P-1), the other two appears near 98K(P-3) and 110K(P-2), respectively. These peaks show different temperature and height dependence on Ni doping. It is speculated that P-3 may be related to a magnetic transition, which is affected by the magnetic impurities Ni. P-2 and P-3 may be related to the jumps of O atoms in the Cu-O chains and the strong interaction between phonons and spin fluctuations, respectively. [References: 7]
机译：内摩擦测量是在100至300K的七个掺Ni的YBCO样品上进行的。在内部摩擦的温度依赖性上观察到三个峰。一个位于约220K（P-1），另外两个分别位于98K（P-3）和110K（P-2）附近。这些峰显示出不同的温度和高度对镍掺杂的依赖性。推测P-3可能与受磁性杂质Ni影响的磁跃迁有关。 P-2和P-3可能分别与Cu-O链中O原子的跃迁以及声子和自旋涨落之间的强相互作用有关。 [参考：7]

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