采用热驰豫方法在0到9T范围内测量了熔融织构Y0.8Ca0.2Ba2Cu3O y的比热.零场下,2～180K的比热结果可以用Einstein模型来描述.通过4-Einstein峰拟合声子谱的方法,我们分别处理了不同磁场下超导转变附近的比热,获得了晶格比热和不同磁场下的电子比热,并将实验结果与London模型的计算结果进行对比,发现London模型能够很好地模拟出我们的实验结果.
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