Linear magnetoelastic coupling and magnetic phase diagrams of the buckled-kagomé antiferromagnet Cu$_3$Bi(SeO$_3$)$_2$O$_2$Cl

S. Spachmann; P. Berdonosov; M. Markina; A. Vasiliev; R. Klingeler

doi:10.1038/s41598-022-11368-5

paper

Linear magnetoelastic coupling and magnetic phase diagrams of the buckled-kagomé antiferromagnet Cu $_{3}$ Bi(SeO $_{3}$ ) $_{2}$ O $_{2}$ Cl

arXiv:2204.11487 · doi:10.1038/s41598-022-11368-5

Abstract

Single crystals of Cu $_{3}$ Bi(SeO $_{3}$ ) $_{2}$ O $_{2}$ Cl were investigated using high-resolution capacitance dilatometry in magnetic fields up to 15 T. Pronounced magnetoelastic coupling is found upon evolution of long-range antiferromagnetic order at T $_{N} = 26.4 (3)$ K. Grüneisen analysis reveals moderate effects of uniaxial pressure on T $_{N}$ , of $1.8 (4)$ K/GPa, $- 0.62 (15)$ K/GPa and $0.33 (10)$ K/GPa for $p ∥ a$ , $b$ , and $c$ , respectively. Below 22 K, Grüneisen scaling fails which implies the presence of competing interactions. The structural phase transition at T $_{S} = 120.7 (5)$ K is much more sensitive to uniaxial pressure than T $_{N}$ , with strong effects of up to $27 (3)$ K/GPa ( $p ∥ c$ ). Magnetostriction and magnetization measurements reveal a linear magnetoelastic coupling for $B ∥ c$ below T $_{N}$ , as well as a mixed phase behavior above the tricritical point around 0.4 T. An analysis of the critical behavior in zero-field points to three-dimensional (3D) Ising-like magnetic ordering. In addition, the magnetic phase diagrams for fields along the main crystalline axes are reported.

9 pages, 7 figures

Linear magnetoelastic coupling and magnetic phase diagrams of the buckled-kagomé antiferromagnet Cu $_{3}$ Bi(SeO $_{3}$ ) $_{2}$ O $_{2}$ Cl

Abstract

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Linear magnetoelastic coupling and magnetic phase diagrams of the buckled-kagomé antiferromagnet Cu3​Bi(SeO3​)2​O2​Cl

Abstract

References in corpus (3)

Cited by in corpus (5)

Linear magnetoelastic coupling and magnetic phase diagrams of the buckled-kagomé antiferromagnet Cu $_{3}$ Bi(SeO $_{3}$ ) $_{2}$ O $_{2}$ Cl