摘要
利用低温光声系统实时采集高Tc超导材料超导转变过程光声信号,是高Tc超导材料超导机理研究的一种新的实验方法。选取YBa_2Cu_3O_(7-8)超导体作为试样,分别构建常态→超导态(试样降温过程)和超导态→常态(试样升温过程),得到转变过程光声信号对比图,并依据光声光谱图对试样失超现象作出可能的解释。
Low-temperature photoacoustic system was used to collect photoacoustic signals of high Tc superconducting material in process of superconducting transformation, which was a new experimental method of study on superconducting mechanism of high Tc superconducting material. By selecting YBa2Cu3O7-δ, superconductor as sample and constructing normal state to superconducting state（cold-down process of sample） as well as superconducting state to normal state（warm-up process of sample）, contrast diagram of photoacoustic signals in process of transformation is obtained, and possible reasons for lose superconductivity phenomenon of sample was explained according to photoacoustic spectral diagram.
出处
《光谱实验室》
CAS
CSCD
2012年第4期2600-2603,共4页
Chinese Journal of Spectroscopy Laboratory
基金
贵州省人才特助经费TZJF[2006]11号
关键词
低温光声系统
YBA2CU3O7-Δ
超导转变
失超
Low-Temperature Photoacoustic System
YBa2Cu3O7-δ,
Superconducting Transition
Lose superconductivity
