Multiple magnetic transitions in single crystals of Ce12Fe57.5As41 and La12Fe57.5As41
Multiple magnetic transitions in single crystals of Ce12Fe57.5As41 and La12Fe57.5As41
复制标题
Ce12Fe57.5As41 和 La12Fe57.5As41 单晶中的多重磁转变
DOI：
10.1007/s11433-018-9291-2
复制
发表时间：
2018-10
影响因子：
6.4
通讯作者：
Luo Jianlin
中科院分区：
文献类型：
--
作者：
Wu Wei;Luo Jianlin
对 Ce12Fe57.5As41 和 La12Fe57.5As41 针状单晶进行磁性和输运性能的测量。完整数据集的可用性使得这两种稀土化合物之间能够进行并列比较。两种化合物在 2-300 K 范围内表现出多种磁序，并在不同场中表现出变磁转变。 Ce12Fe57.5As41 和 La12Fe57.5As41 分别在居里温度为 100 和 125 K 时发现铁磁转变，随后在居里温度附近出现反铁磁型自旋重新取向。两种化合物的磁性在磁场中经历了复杂的演变。仅在 Ce12Fe57.5As41 中观察到在约 60 K 和 0.2 T 时的反铁磁相变。场感应磁相变发生从反铁磁结构到铁磁结构。从 Ce12Fe57.5As41 的磁化强度测量中可以看出很强的磁晶各向异性。给出了这两种稀土系统的温度场相图。此外，在 150-300 K 的大温度范围内，在这两种化合物中观察到电阻率的对数温度依赖性，这在基于 3D 的化合物中很少见。它可能与由独立局域 Fe 3d 矩与传导电子相互作用描述的近藤散射有关。
Measurements of magnetic and transport properties were performed on needle-shaped single crystals of Ce12Fe57.5As41 and La12Fe57.5As41. The availability of a complete set of data enabled a side-by-side comparison between these two rare earth compounds. Both compounds exhibited multiple magnetic orders within 2-300 K and metamagnetic transitions at various fields. Ferromagnetic transitions with Curie temperatures of 100 and 125 K were found for Ce12Fe57.5As41 and La12Fe57.5As41, respectively, followed by antiferromagnetic type spin reorientations near Curie temperatures. The magnetic properties underwent complex evolution in the magnetic field for both compounds. An antiferromagnetic phase transition at about 60 K and 0.2 T was observed merely for Ce12Fe57.5As41. The field-induced magnetic phase transition occurred from antiferromagnetic to ferromagnetic structure. A strong magnetocrystalline anisotropy was evident from magnetization measurements of Ce12Fe57.5As41. A temperature-field phase diagram was present for these two rare earth systems. In addition, a logarithmic temperature dependence of electrical resistivity was observed in the two compounds within a large temperature range of 150-300 K, which is rarely found in 3D-based compounds. It may be related to Kondo scattering described by independent localized Fe 3d moments interacting with conduction electrons.
登录
查看更多内容
影响因子：
1.8
作者：
Ren, Zhi-An;Yang, Jie;Zhao, Zhong-Xian
通讯作者：
Zhao, Zhong-Xian
影响因子：
3.5
作者：
Chen Gen-Fu;Li Zheng;Li Gang;Hu Wan-Zheng;Dong Jing;Zhou Jun;Zhang Xiao-dong;Zheng Ping;Wang Nan-Lin;Luo Jian-lin
通讯作者：
Chen Gen-Fu;Li Zheng;Li Gang;Hu Wan-Zheng;Dong Jing;Zhou Jun;Zhang Xiao-dong;Zheng Ping;Wang Nan-Lin;Luo Jian-lin
影响因子：
1.8
作者：
P. Volkov;S. Poon
通讯作者：
P. Volkov;S. Poon
影响因子：
8.6
作者：
S. Yeo;S. Nakatsuji;A. Bianchi;P. Schlottmann;Z. Fisk;L. Balicas;Stampe Pa;Kennedy Rj
通讯作者：
S. Yeo;S. Nakatsuji;A. Bianchi;P. Schlottmann;Z. Fisk;L. Balicas;Stampe Pa;Kennedy Rj
影响因子：
3.3
作者：
A. K. Fan;G. Rosenthal;H. McKinzie;A. Wold
通讯作者：
A. K. Fan;G. Rosenthal;H. McKinzie;A. Wold