Modulating the reversibility of electric polarization in Al-doped Y-type hexaferrites
Modulating the reversibility of electric polarization in Al-doped Y-type hexaferrites
复制标题
调制掺铝 Y 型六角铁氧体中电极化的可逆性
DOI：
10.1016/j.jallcom.2021.162399
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发表时间：
2021
影响因子：
6.2
通讯作者：
Man-Rong Li
中科院分区：
文献类型：
--
作者：
Meixia Wu;Yifeng Han;Xiang Zhou;Xihui Liang;Shuang Zhao;Man-Rong Li
在实际应用中，控制和调制多铁体中电极化的幅度和符号是非常重要的。多铁性材料中的磁电效应可以通过磁场控制和调整电极化，反之亦然。然而，关于多铁体中电极化幅度和信号相互控制的研究很少。本文通过通量法成功合成了y型六铁体Ba0.8Sr1.2Co2Fe12-xAlxO22（x= 0和1.08）单晶。研究了材料的磁化性能、磁介电性能和磁电性能。结果表明，al掺杂提高了材料的锥形磁结构转变温度，增强了材料的磁电性能。最重要的是，两种样品在低温和高温下分别表现出反转和非反转极化。此外，al掺杂可以稳定非反转的铁电极化，这可能源于不同的场相关磁结构跃迁。
Controlling and modulating the magnitude and signs of electric polarization in multiferroics are very important for practical applications. The magnetoelectric effect in multiferroic materials enables the control and tailor of electric polarization by a magnetic field orvice versa. However, there are rare investigations about the mutual control of the magnitude and signs of electric polarization in multiferroics. Here, we successfully synthesized single crystals of Y-type hexaferrites Ba0.8Sr1.2Co2Fe12-xAlxO22(x= 0 and 1.08) via flux method. The magnetization, magnetodielectric and magnetoelectric properties were investigated. We found that Al-doping increased the conical magnetic structure transition temperatures and enhanced the magnetoelectric properties. Most importantly, both samples exhibited reversal and non-reversal polarizations at low and high temperatures, respectively. In addition, Al-doping can stabilize the non-reversal ferroelectric polarization, possibly originating from the different field-dependent magnetic structure transitions.