Chirality‐Dependent Magnetoelectric Responses in a Magnetic‐Field‐Induced Ferroelectric Phase of Pb(TiO)Cu4(PO4)4
Chirality‐Dependent Magnetoelectric Responses in a Magnetic‐Field‐Induced Ferroelectric Phase of Pb(TiO)Cu4(PO4)4
复制标题
Pb(TiO)Cu4(PO4)4 磁场感应铁电相中手性相关的磁电响应
DOI：
10.1002/aelm.202200167
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发表时间：
2022
影响因子：
6.2
通讯作者：
Kimura Tsuyoshi
中科院分区：
文献类型：
--
作者：
Kimura Kenta;Katsuyoshi Tsukasa;Miyake Atsushi;Tokunaga Masashi;Kimura Shojiro;Kimura Tsuyoshi
磁电多铁性材料可以表现出各种功能特性，如电场控制磁化强度和非互易电磁响应。这样的磁电响应可以通过磁电顺序和特殊的晶体顺序（例如晶体手性）的组合而进一步丰富。最近，据报道，在其基态下显示磁电四极序的手性晶格磁体Pb（TiO）Cu 4（PO 4）4表现出相对于所施加的磁场的反常手性诱导的磁化矢量倾斜。在本进展报告中，提出了进一步理解手性诱导的磁化矢量倾斜的其他结果。发现手性诱导的磁化矢量的倾斜也存在于该化合物的磁场诱导铁电（FI-FE）相中，其在高于16特斯拉的磁场中稳定。所得到的磁化的横向分量可以通过极化反转与所施加的电场切换。分析表明，该横向分量高达每f.u 10.014 μ B，表明FI-FE阶段的磁化倾斜角远大于低场阶段。此外，作为另一个研究进展，电场控制的非互易定向二向色性在FI-FE阶段被证明。
Magnetoelectric multiferroic materials can exhibit a variety of functional properties such as electric field control of magnetization and nonreciprocal electromagnetic responses. Such a magnetoelectric response may be further enriched by the combination of the magnetoelectric order and a peculiar crystallographic order, such as crystal chirality. Recently, it was reported that a chiral‐lattice magnet Pb(TiO)Cu4(PO4)4showing a magnetoelectric quadrupole order in its ground state exhibits anomalous chirality‐induced tilt of magnetization vector with respect to an applied magnetic field. In this progress report, additional results that advance the understanding of chirality‐induced tilt of magnetization vector are presented. It is found that chirality‐induced tilt of the magnetization vector also exists in a magnetic‐field‐induced ferroelectric (FI‐FE) phase of this compound that is stabilized in magnetic fields higher than 16 tesla. The resulting transverse component of the magnetization can be switched with an applied electric field through a polarization reversal. The analysis indicates that this transverse component is as large as ≈0.014 μBper f.u, suggesting that the tilting angle of the magnetization in the FI‐FE phase is much larger than that in the low‐field phase. Also, as another research progress, electric field control of nonreciprocal directional dichroism in the FI‐FE phase is demonstrated.