Structure and magnetism of a new hexagonal polymorph of Ba$_3$Tb(BO$_3$)$_3$ with a quasi-2D triangular lattice

Nicola Kelly; Cheng Liu; Siân Dutton

doi:10.1016/j.jssc.2020.121640

paper

Structure and magnetism of a new hexagonal polymorph of Ba $_{3}$ Tb(BO $_{3}$ ) $_{3}$ with a quasi-2D triangular lattice

arXiv:2007.15453 · doi:10.1016/j.jssc.2020.121640

Abstract

This article reports the structural and magnetic characterisation of a new hexagonal ( $P 6_{3} c m$ ) low-temperature phase of Ba $_{3}$ Tb(BO $_{3}$ ) $_{3}$ , isostructural with the heavier lanthanide borates with formula Ba $_{3}$ Ln(BO $_{3}$ ) $_{3}$ (Ln = Dy-Lu). The crystal structure contains a quasi-two-dimensional (2D) triangular lattice of Tb $^{3 +}$ ions and is predicted to display unusual magnetic behaviour as a result of the low dimensionality. Magnetic susceptibility $χ (T)$ shows antiferromagnetic interactions ( $θ_{C W} = - 7.15$ K) and no sharp ordering transition at $T \geq 2$ K, but analysis of $χ^{'} (T)$ , isothermal magnetisation and heat capacity suggests the possibility of short-range ordering at $T \approx 10$ K. The material exhibits an inverse magnetocaloric effect at $T < 4$ K.

Structure and magnetism of a new hexagonal polymorph of Ba $_{3}$ Tb(BO $_{3}$ ) $_{3}$ with a quasi-2D triangular lattice

Abstract

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Cited by in corpus (3)

Structure and magnetism of a new hexagonal polymorph of Ba3​Tb(BO3​)3​ with a quasi-2D triangular lattice

Abstract

References in corpus (21)

Cited by in corpus (3)

Structure and magnetism of a new hexagonal polymorph of Ba $_{3}$ Tb(BO $_{3}$ ) $_{3}$ with a quasi-2D triangular lattice