Bulk antiferromagnetism in Na0.82CoO2 single crystals
Bulk antiferromagnetism in Na0.82CoO2 single crystals
复制标题
Na0.82CoO2 单晶的块体反铁磁性
DOI：
--
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
J. Strempfer
中科院分区：
文献类型：
--
作者：
S. Bayrakci;C. Bernhard;D. P. Chen;B. Keimer;R. Kremer;Peter Lemmens;Chengtian Lin;C. Niedermayer;J. Strempfer
高质量Na0单晶的磁化率、比热和Muon自旋旋转测量。82CoO2具有体相反铁磁性，其Neel温度TN=19.8‘0.1K，有一个垂直于CoO2层的有序矩.磁序几乎涵盖了晶体体积的100%。磁化率在30K附近有一个宽峰，具有二维反铁磁起伏的特征。面内电阻率在高温下是金属的，在T_N时表现出最小值。
Susceptibility, specific heat, and muon spin rotation measurements on high-quality single crystals of Na 0 . 8 2 CoO 2 have revealed bulk antiferromagnetism with Neel temperature T N =19.8′0.1 K and an ordered moment perpendicular to the CoO 2 layers. The magnetic order encompasses nearly 100% of the crystal volume. The susceptibility exhibits a broad peak around 30 K, characteristic of two-dimensional antiferromagnetic fluctuations. The in-plane resistivity is metallic at high temperatures and exhibits a minimum at T N .