Structural Ordering and Magnetic Property of Complex Perovskite Solid Solution (1-x)Pb(Fe2/3W1/3)O3-xPb(Mg1/2W1/2)O3
Source abstract
Abstract
以无机盐为前驱体, 利用溶胶?凝胶法固溶合成了(1- x )Pb(Fe 2/3 W 1/3 )O 3 - x Pb(Mg 1/2 W 1/2 )O 3 多铁性固溶体. XRD分析表明, 在0≤ x ≤1.0的掺杂范围内, 700℃煅烧所得产物都具有钙钛矿结构; x =0时得到的纯Pb(Fe 2/3 W 1/3 )O 3 为长程无序结构, x =1.0时可获得完全有序的纯Pb(Mg 1/2 W 1/2 )O 3 相, 其单胞为Pb(Fe 2/3 W 1/3 )O 3 单胞的2倍; 当0 x x )Pb(Fe 2/3 W 1/3 )O 3 - x Pb(Mg 1/2 W 1/2 )O 3 固溶体也为有序结构, 出现1/2 (111)及1/2 (311) XRD衍射峰, 且强度随掺杂系数x的升高逐渐增大. TEM分析证实, 煅烧产物为具有钙钛矿结构的单相固溶体, 而非两相复合物; 固溶相形貌以立方颗粒为主, 随掺杂量增加其晶胞常数线性增大, 而晶粒尺寸先减小后变大. 性能测试发现, 固溶相的磁学性能随x的增加而逐渐下降, 起因于抗磁性的Pb(Mg 1/2 W 1/2 )O 3 破坏了Pb(Fe 2/3 W 1/3 )O 3 原有的价键结构所致.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Multiferroics and related materials · Ferroelectric and Piezoelectric Materials · Magnetic and transport properties of perovskites and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (18)
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