论文标题
化学成分的沮丧的抗fiferromagnet cscrf $ _ {4} $中的磁性顺序
Magnetic order in the chemically-substituted frustrated antiferromagnet CsCrF$_{4}$
论文作者
论文摘要
化学替代对几何沮丧的抗铁磁铁CSCRF $ _4 $的基态的影响已通过中子粉末衍射实验进行了研究。 Magnetic Fe-substituted CsCr$_{0.94}$Fe$_{0.06}$F$_{4}$ and nonmagnetic Al-substituted CsCr$_{0.98}$Al$_{0.02}$F$_{4}$ samples are measured, and magnetic Bragg peaks are clearly observed in both samples.磁性结构分析揭示了一个120 $^{\ circ} $结构，具有磁性传播向量$ \ mathbf {k} _ {\ rm mag} =（0,0,0,1/2）$ in CSCR $ _ {0.94} $ _ {0.94} $ _ {0.94} $ fe $ _ {0.06} $ f $ f $ _ {0.06} $ f $ _ {4} $。对于CSCR $ _ {0.98} $ al $ _ {0.02} $ f $ _ {4} $，Quasi-1220 $^{\ circ} $结构具有$ \ MATHBF {k} _ {k} _ {\ rm mag} =（1/2,0,1/2）$形成了$。值得注意的是，CSCR $ _ {0.94} $ fe $ _ {0.06} $ f $ _ {4} $属于与CSCR $ _ {0.98} $ al $ _ {0.02} $ f $ _ {0.02} $ _ {4} $ cscr的$ _ {0.98} $ {0.98} $ {0.98} $ {4} $ cscr的基础状态的不同阶段。这些结果表明，Fe-Auscitution强烈影响CSCRF $ _ {4} $的基态。
The effect of chemical substitution on the ground state of the geometrically frustrated antiferromagnet CsCrF$_4$ has been investigated through a neutron powder diffraction experiment. Magnetic Fe-substituted CsCr$_{0.94}$Fe$_{0.06}$F$_{4}$ and nonmagnetic Al-substituted CsCr$_{0.98}$Al$_{0.02}$F$_{4}$ samples are measured, and magnetic Bragg peaks are clearly observed in both samples. Magnetic structure analysis revealed a 120$^{\circ}$ structure having a magnetic propagation vector $\mathbf{k}_{\rm mag}=(0,0,1/2)$ in CsCr$_{0.94}$Fe$_{0.06}$F$_{4}$. For CsCr$_{0.98}$Al$_{0.02}$F$_{4}$, a quasi-120$^{\circ}$ structure having $\mathbf{k}_{\rm mag}=(1/2,0,1/2)$ is formed. It is notable that the identified magnetic structure in CsCr$_{0.94}$Fe$_{0.06}$F$_{4}$ belongs to a different phase of ground states from those in CsCr$_{0.98}$Al$_{0.02}$F$_{4}$ and the parent CsCrF$_{4}$. These results suggest that the Fe-substitution strongly influences the ground state of CsCrF$_{4}$.
