The γ-α transition in cerium compounds
The γ-α transition in cerium compounds
复制标题
铈化合物中的 γ-α 转变
DOI：
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发表时间：
1983
期刊：
影响因子：
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通讯作者：
M. Cyrot
中科院分区：
文献类型：
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作者：
M. Lavagna;C. Lacroix;M. Cyrot
γ-α转变和相关的体积崩溃内的可压缩近藤晶格中的变化，模J模/D与体积被考虑在内。作者表明，与促进模型相反，近藤贡献足以在低温下诱导从磁性相到近藤相的一级转变。然后，α相的特征在于极高的近藤温度。在零温度和有限温度下也进行了计算，并证明了临界点的存在。最后，他们提出了一个概括的化学压力的影响。对Ce、CeAl 2和Ce 1-xThx进行了应用。
The gamma - alpha transition and the related volume collapse are explained within a compressible Kondo lattice where the variation of mod J mod /D with volume is taken into account. The authors show that, contrary to the promotion model, the Kondo contribution is sufficient to induce a first-order transition at low temperature from a magnetic to a Kondo phase. The alpha phase is then characterised by an extremely high Kondo temperature. The calculations are also made at zero and finite temperatures and the existence of a critical point is demonstrated. Finally, they propose a generalisation to the effect of a chemical pressure. Applications are made to Ce, CeAl2 and Ce1-xThx.