臺灣博碩士論文加值系統

CeAg0.7Ga3.3化合物具有tetragonal的結構，其空間群(space group)為I4/mmm。我們對其作磁性、比熱和電阻率的測量發現，交流磁化率χ’ac量測的峰值所對應的自旋凍結溫度Tf，會因為頻率從 1 Hz上升到1000 Hz，Tf也會從3.2 K慢慢上升到3.3 K。並且，由比熱和電阻率的量測發現此樣品的TN大約為3.2 K，非常接近χ’ac頻率為1 Hz下所量測到的Tf。所以在TN處磁有序之磁熵被大幅度的減弱現象則是來自於自旋玻璃的影響。

第一章、 簡介
第二章、 相關理論簡介
第三章、 實驗技術
第四章、 結果與討論
第五章、 第五章、結論

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