论文标题
线性磁弹性耦合和磁性相图的扣子抗Fiferromagnet cu $ _3 $ bi（seo $ _3 $）$ _ 2 $ o $ $ _2 $ cl
Linear magnetoelastic coupling and magnetic phase diagrams of the buckled-kagomé antiferromagnet Cu$_3$Bi(SeO$_3$)$_2$O$_2$Cl
论文作者
论文摘要
Cu $ _3 $ bi（SEO $ _3 $）的单晶$ _ 2 $ _2 $ _2 $ cl使用高达15 t的磁场中的高分辨率电容扩散。 Grüneisen分析揭示了单轴压力对T $ _ {\ Mathrm {n}} $的中等影响，$ 1.8（4）$ K/GPA，$ -0.62（15）$ K/GPA和$ K/GPA和$ 0.33（10）$ k/gpa for $ p \ p \ p \ a $ a $ a $，$ b $，$ b $，相应地相应。在22 K以下，Grüneisen缩放失败，这意味着存在竞争相互作用。 t $ _ {\ mathrm {s}} = 120.7（5）$ k在T $ _ {\ Mathrm {5）上对单轴压力的结构相变比T $ _ {\ Mathrm {n}} $更为敏感，最高可高达$ 27（3）$ k/gpa（$ p \ p \ parallel c $）。磁静脉和磁化测量结果揭示了$ b \ paralalel C $以下的线性磁弹性耦合T $ _ {\ Mathrm {n}} $，以及在0.4 t左右的三色阶段上方的混合阶段行为。对在零景点的关键行为分析到零位点至三二维（3d ddd dragement oferce）。另外，报道了沿主晶轴的磁场的磁相图。
Single crystals of Cu$_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. Grüneisen 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, Grüneisen 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.
