Linear magnetoelastic coupling and magnetic phase diagrams of the buckled-kagom\'{e} antiferromagnet Cu$_3$Bi(SeO$_3$)$_2$O$_2$Cl
| Autor: | Spachmann, S., Berdonosov, P., Markina, M., Vasiliev, A., Klingeler, R. |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Sci Rep 12, 7383 (2022) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/s41598-022-11368-5 |
| Popis: | 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$_{\mathrm{N}} = 26.4(3)$ K. Gr\"{u}neisen analysis reveals moderate effects of uniaxial pressure on T$_{\mathrm{N}}$, of $1.8(4)$ K/GPa, $-0.62(15)$ K/GPa and $0.33(10)$ K/GPa for $p \parallel a$, $b$, and $c$, respectively. Below 22 K, Gr\"{u}neisen scaling fails which implies the presence of competing interactions. The structural phase transition at T$_{\mathrm{S}} = 120.7(5)$ K is much more sensitive to uniaxial pressure than T$_{\mathrm{N}}$, with strong effects of up to $27(3)$ K/GPa ($p \parallel c$). Magnetostriction and magnetization measurements reveal a linear magnetoelastic coupling for $B\parallel c$ below T$_{\mathrm{N}}$, 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. Comment: 9 pages, 7 figures |
| Databáze: | arXiv |
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