Magnetic and dielectric properties of the PbFeBO<sub>4sub> single crystal
详细信息 查看全文
- 作者：A. Pankrats ; K. Sablina ; D. Velikanov ; A. Vorotynov ; O. Bayukov ; A. Eremin ; M. Molokeev ; S. Popkov ; A. Krasikov
- 关键词：Single crystal growth ; Magnetic susceptibility ; Magnetic phase transition ; Antiferromagnetic order ; Dielectric permittivity ; Magnetoelectric effect
- 刊名：Journal of Magnetism and Magnetic Materials
- 出版年：March, 2014
- 年：2014
- 卷：353
- 期：Complete
- 页码：23-28
- 全文大小：840 K
文摘
PbFeBO<sub>4sub> single crystals up to 4脳2.5脳0.5 mm<sup>3sup> in size were grown by spontaneous crystallization from a solution in a melt and their magnetic and dielectric properties were investigated. The high Neel temperature T<sub>Nsub>=114 K and the absence of the broad maximum of susceptibility above the Neel temperature suggest that the PbFeBO<sub>4sub> crystal is a three-dimensional antiferromagnet. The magnetic susceptibility anisotropy in the ordered state indicates that the antiferromagnetic vector is directed along the orthorhombic <strong class="boldFont">cstrong> axis. The anomalies of dielectric permittivities 蔚' and 蔚鈥?were observed in both polycrystalline and single-crystal samples within the temperature ranges where the short- and long-range magnetic orders are established. This confirms the correlation between the magnetic and electric subsystems in the crystal.