On the nature of the Faraday effect in the rare-earth ortho-aluminate TbAlO3

Spectroscopic and magnetic susceptibility analyses of the 7FJ and 5D4 energy levels of Tb3+(4f8) in TbAlO3

“…The result is compared with experimental data reported in the literature [1,11,14]. The magnetic susceptibility measured along the c-axis is due to admixing of excited 7 F 6 states with the ground-state quasi-doublet.…”

“…The energy distribution of these quasi-doublets leads to the magnetic properties that are characteristic of TbAlO 3 . Others have shown that the ground-state of Tb 3+ in TbAlO 3 is a quasi-doublet consisting of two singlet states of different symmetry (A and B) [5,11,14]. In the absence of a magnetic field (Zeeman spectroscopy) to further separate these levels, it is difficult to determine the symmetry labels of excited Stark levels based on transition selection rules applied to the polarized absorption spectra.…”

“…The Tb 3+ ions occupy low-symmetry sites (C s ) that experience a crystal field environment leading to a large anisotropy in the magnetic moments [5,[11][12][13][14]. Consequently, investigating the magnetic properties of Tb 3+ (4f 8 ) in the stoichiometric compound represents part of the rational for the present study.…”

“…In addition to the magnetic behavior of TbAlO 3 , there are interesting spectroscopic features associated with the material [14][15][16][17][18][19][20][21][22]. Intense fluorescence is observed from 5 D 4 to the 7 F J manifolds in TbAlO 3 .…”

Crystal, electronic structures, optical and magnetic properties of Tb4Al2O9

“…With respect to the magnetic susceptibilities, a typical paramagnetic character was observed for the single crystals of Tb 3 Al 5 O 12 [11] and TbAlO 3 [16][17][18][19]. Moreover, the crystal structures of Tb 3 Al 5 O 12 and TbAlO 3 have been well documented, in which Tb 3 Al 5 O 12 is a typical garnet structure [20] and TbAlO 3 crystallizes in the orthorhombic structure [16,21].…”