Synchrotron-radiation-based Mossbauer spectroscopy of 40K in antiferromagnetic potassium nanoclusters in sodalite
Synchrotron-radiation-based Mossbauer spectroscopy of 40K in antiferromagnetic potassium nanoclusters in sodalite
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基于同步辐射的穆斯堡尔光谱 40K 方钠石反铁磁性钾纳米团簇
DOI：
10.1103/physrevb.91.140101
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
and Yasuo Nozue
中科院分区：
文献类型：
--
作者：
Takehito Nakano;Naoki Fukuda;Makoto Seto;Yasuhiro Kobayashi;Ryo Masuda;Yoshitaka Yoda;Mototsugu Mihara;and Yasuo Nozue
进行了基于同步辐射的穆斯堡尔吸收光谱。我们研究了排列在方钠石多孔晶体中的钾纳米簇。纳米团簇表现出低于 K 的反铁磁 (AFM) 有序性。成功获得了8-140 K温度范围内的能域穆斯堡尔谱。对谱图的精确分析表明在低温下出现了超精细磁场。超精细场在 8 K 处评估为 beT。该结果表明在 AFM 有序状态下三维排列的钾纳米团簇中 s 电子自旋的自发极化。
Synchrotron-radiation-based Mössbauer absorption spectroscopy ofnuclei was performed. We investigated potassium nanoclusters arrayed in a porous crystal of sodalite. The nanoclusters exhibit antiferromagnetic (AFM) ordering belowK. The energy-domainMössbauer spectra were successfully obtained in the temperature range of 8–140 K. Precise analysis of the spectra indicates the appearance of a hyperfine magnetic field at low temperatures. The hyperfine field was evaluated to beT at 8 K. This result signifies the spontaneous polarization ofs-electron spins in three-dimensionally arrayed potassium nanoclusters in AFM-ordered states.