EuNiGe₃的复杂非公度螺旋磁有序
Complex incommensurate helicoidal magnetic ordering of EuNiGe3.
作者信息
Ryan D H, Cadogan J M, Rejali Rasa, Boyer C D
机构信息
Physics Department and Centre for the Physics of Materials, McGill University, 3600 University Street, Montreal, Quebec, H3A 2T8, Canada.
出版信息
J Phys Condens Matter. 2016 Jul 6;28(26):266001. doi: 10.1088/0953-8984/28/26/266001. Epub 2016 May 13.
(151)Eu Mössbauer spectroscopy and neutron powder diffraction are combined to show that the tetragonal (I4mm #107) compound EuNiGe3 orders magnetically below [Formula: see text] K and adopts a complex incommensurate helicoidal magnetic structure at 3.6 K, with a propagation vector [Formula: see text] and a Eu moment of 7.1(2) [Formula: see text]. On warming through 6 K an incommensurate sinusoidal modulation develops and dominates the magnetic order by 12 K.
（151）利用铕穆斯堡尔光谱和中子粉末衍射相结合的方法表明，四方晶系（I4mm #107）化合物EuNiGe₃在[公式：见原文]K以下发生磁有序，并在3.6 K时采用复杂的非公度螺旋磁结构，其传播矢量为[公式：见原文]，铕磁矩为7.1(2)[公式：见原文]。在升温至6 K时，出现非公度正弦调制，并在12 K时主导磁有序。
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