Spin-glass behavior of Sn0.9Fe3.1N: An experimental and quantum-theoretical study
Spin-glass behavior of Sn0.9Fe3.1N: An experimental and quantum-theoretical study
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DOI：
10.1063/1.4948984
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发表时间：
2016-05
期刊：
影响因子：
1.6
通讯作者：
T. Scholz;R. Dronskowski
中科院分区：
文献类型：
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作者：
T. Scholz;R. Dronskowski
基于全面的实验和量子理论研究，我们确定Sn0.9Fe3.1N作为一个典型的自旋玻璃和第一个三元铁氮化物与挫折自旋基态。Sn0.9Fe3.1N是由铁磁性γ′-Fe 4 N形成的固溶体SnxFe 4 −xN（0 < x ≤ 0.9）的端元。在固溶体中，锡的逐渐掺入伴随着铁磁相互作用的急剧减弱。为了探索铁磁耦合的稀释，高度锡取代的Sn0.9Fe3.1N磁性重新研究。直流磁强计揭示了不同的磁化率FC和ZFC测量在低温和不饱和的磁滞回线，即使在高磁场。不同频率下交流磁化率真实的部的温度依赖性证明了自旋玻璃转变的特征参数Tg = 12.83（6）K，τ* = 10−11.8（2）s，zv = 5.6（1），ΔTm/（Tm <$Δlgω）= 0.015。的时间依赖性的响应…
Based on comprehensive experimental and quantum-theoretical investigations, we identify Sn0.9Fe3.1N as a canonical spin glass and the first ternary iron nitride with a frustrated spin ground state. Sn0.9Fe3.1N is the end member of the solid solution SnxFe4−xN (0 < x ≤ 0.9) derived from ferromagnetic γ′-Fe4N. Within the solid solution, the gradual incorporation of tin is accompanied by a drastic weakening of the ferromagnetic interactions. To explore the dilution of the ferromagnetic coupling, the highly tin-substituted Sn0.9Fe3.1N has been magnetically reinvestigated. DC magnetometry reveals diverging susceptibilities for FC and ZFC measurements at low temperatures and an unsaturated hysteretic loop even at high magnetic fields. The temperature dependence of the real component of the AC susceptibility at different frequencies proves the spin-glass transition with the characteristic parameters Tg = 12.83(6) K, τ* = 10−11.8(2) s, zv = 5.6(1) and ΔTm/(Tm ⋅ Δlgω) = 0.015. The time-dependent response of the ...