Mössbauer Study of β-Mn Alloys with Iron and Tin–Weak Itinerant-Electron Antiferromagnetism of β-Mn Alloys–
Mössbauer Study of β-Mn Alloys with Iron and Tin–Weak Itinerant-Electron Antiferromagnetism of β-Mn Alloys–
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含铁和锡的 β-Mn 合金的穆斯堡尔研究 - β-Mn 合金的弱流动电子反铁磁性 -
DOI：
10.1143/jpsj.42.845
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发表时间：
1977
期刊：
影响因子：
--
通讯作者：
S. Waki
中科院分区：
文献类型：
--
作者：
Y. Nishihara;S. Ogawa;S. Waki
对β-Mn合金中57 Fe和119 Sn进行了穆斯堡尔谱实验。约80%的铁原子占据I位，锡原子占据II位。57 Fe和119 Sn的平均超精细场随晶格常数的增大而增大。Mn 1-xFex中57 Fe处的超精细场在4.2K（x >0.02）时约为10 kOe.在295 K时，铁的同质异能素位移为-0.23mm/sec。铁原子在β-Mn中具有小的局域磁矩。d电子从杂质向Mn的d带的转移是β-Mn合金反铁磁性的最重要来源。含铁锡合金的尼尔温度主要由d电子数和晶格膨胀效应两个方面的贡献来表示。
Mossbauer experiment of 57 Fe and 119 Sn in β-Mn alloys has been made. About 80% of iron atonas occupy positions of site I and tin atonas occupy site II. The average hyperfine fields at 57 Fe and 119 Sn iatcrease as the lattice constant increases. The hyperfine field at 57 Fe in Mn 1- x Fe x is about 10kOe at 4.2 K for x >0.02. The isomer shift of iron is -0.23 mm/sec at 295 K. The iron atom has a small localized moment in β-Mn. A transfer of d electrons from impurities to the d band of Mn is concluded to be the most important source to induce the antiferromagnetism of β-Mn alloys with 3d-transition metal impurities. Neel temperatures of alloys with iron and tin are expressed by two main contributions, which are the effects of d-electron number and lattice expansion.