Fluctuations and the ferromagnetic instability in YFe2Al10: The role of Fe stoichiometry
Fluctuations and the ferromagnetic instability in YFe2Al10: The role of Fe stoichiometry
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YFe2Al10 中的波动和铁磁不稳定性：Fe 化学计量的作用
DOI：
10.1002/pssb.201200823
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
F. Steglich
中科院分区：
文献类型：
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作者：
A.M. Strydom;P. Khuntia;M. Baenitz;P. Peratheepan;F. Steglich
yfe2al10以有序的晶体结构形成，具有磁性原子Fe的独特位置。在高温下，yfe2al10表现为良好的电子金属。另一方面，在低温下，相关行为的特征发展，最终非费米-液体结垢主导了所有的物理性质：电阻率在20 K以下发展为负温度系数，比热cp (T)/Tandχ(T)在降低到3 K以下时都呈幂律增加。尽管有令人信服的证据表明yfe2al10中存在即将发生的有序，并且它确实具有铁磁性，但在最低温度下的研究未能发现yfe2al10中的磁有序。本文报道了δ≤|0.1|的YFe2 +δ al10系列化合物的热输运和电子输运以及热容研究，目的是测试低温物理性质发散对非化学计量铁的稳定性。
YFe2Al10forms in a well‐ordered crystal structure, with a unique site for the magnetic atom Fe. At elevated temperatures YFe2Al10behaves electronically as a good metal. At low temperatures on the other hand, signatures of correlated behavior develop and eventually non‐Fermi‐liquid scaling dominates all of the physical properties: the electrical resistivity develops a negative temperature coefficient below 20 K, and the specific heatCp(T)/Tandχ(T) both assume a power‐law increase upon lowering the temperature below ≃3 K. Lowest temperature studies have failed to find magnetic ordering in YFe2Al10in spite of compelling evidence that there is impending order in this compound and that it is indeed of ferromagnetic character. Here we report on measurements of thermal and electronic transport as well as heat capacity studies on the series of compounds YFe2 +δAl10withδ≤ |0.1|, with the purpose of testing the stability of the low‐temperature divergences in physical properties against off‐stoichiometric Fe.
YbFe2Al10 结构类型的 CeRu2Al10
DOI：
--
发表时间：
2005
期刊：
影响因子：
--
作者：
A. Tursina;S. N. Nesterenko;E. Murashova;I. Chernyshev;H. Noël;Y. Seropegin
通讯作者：
Y. Seropegin