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MnO2 doped lanthanum calcium manganese oxide polycrystalline ceramic target material and preparation method thereof
The invention discloses a MnO2 doped lanthanum calcium manganese oxide polycrystalline ceramic target material and a preparation method thereof, and belongs to the technical field of functional electronic ceramics. The molecular formula of the MnO2 doped lanthanum calcium manganese oxygen polycrystalline ceramic target material is (La1-xCaxMnO3) 1-y: (MnO2) y, wherein x is more than 0.2 and less than or equal to 0.5, and y is more than 0 and less than or equal to 0.2. On one hand, diffusion and reverse diffusion effects exist at the interface of the La1-xCaxMnO3 phase and the MnO2 phase, a new conductive and double-exchange channel is formed at the junction of the two phases, and the electromagnetic performance of a sample is affected. And on the other hand, the insulator MnO2 is distributed in the form of particles, so that the volume fraction and disorder degree of the crystal boundary are increased, and the scattering effect on cruising electrons is improved. And meanwhile, the increase of Mn < 4 + > ions promotes the double exchange mechanism of the system, so that the phase transformation is quicker, and the increase of the peak resistance temperature coefficient is facilitated.
本发明公开一种MnO2掺杂镧钙锰氧多晶陶瓷靶材及制备方法，属于功能电子陶瓷技术领域。所述MnO2掺杂镧钙锰氧多晶陶瓷靶材的分子式为(La1‑xCaxMnO3)1‑y:(MnO2)y，其中0.2＜x≤0.5，0＜y≤0.2。一方面，La1‑xCaxMnO3相与MnO2相的界面处存在扩散与反向扩散作用，在两相交界处形成新的导电和双交换通道，对样品电磁性能有所影响。另一方面，绝缘体MnO2以颗粒的形式分布，增加了晶界的体积分数与无序度，提高对巡游电子的散射作用。同时Mn4+离子的增加对体系的双交换机制起促进作用，使相转变的发生更加迅速，从而有利于峰值电阻温度系数的增大。
MnO2 doped lanthanum calcium manganese oxide polycrystalline ceramic target material and preparation method thereof
The invention discloses a MnO2 doped lanthanum calcium manganese oxide polycrystalline ceramic target material and a preparation method thereof, and belongs to the technical field of functional electronic ceramics. The molecular formula of the MnO2 doped lanthanum calcium manganese oxygen polycrystalline ceramic target material is (La1-xCaxMnO3) 1-y: (MnO2) y, wherein x is more than 0.2 and less than or equal to 0.5, and y is more than 0 and less than or equal to 0.2. On one hand, diffusion and reverse diffusion effects exist at the interface of the La1-xCaxMnO3 phase and the MnO2 phase, a new conductive and double-exchange channel is formed at the junction of the two phases, and the electromagnetic performance of a sample is affected. And on the other hand, the insulator MnO2 is distributed in the form of particles, so that the volume fraction and disorder degree of the crystal boundary are increased, and the scattering effect on cruising electrons is improved. And meanwhile, the increase of Mn < 4 + > ions promotes the double exchange mechanism of the system, so that the phase transformation is quicker, and the increase of the peak resistance temperature coefficient is facilitated.
本发明公开一种MnO2掺杂镧钙锰氧多晶陶瓷靶材及制备方法，属于功能电子陶瓷技术领域。所述MnO2掺杂镧钙锰氧多晶陶瓷靶材的分子式为(La1‑xCaxMnO3)1‑y:(MnO2)y，其中0.2＜x≤0.5，0＜y≤0.2。一方面，La1‑xCaxMnO3相与MnO2相的界面处存在扩散与反向扩散作用，在两相交界处形成新的导电和双交换通道，对样品电磁性能有所影响。另一方面，绝缘体MnO2以颗粒的形式分布，增加了晶界的体积分数与无序度，提高对巡游电子的散射作用。同时Mn4+离子的增加对体系的双交换机制起促进作用，使相转变的发生更加迅速，从而有利于峰值电阻温度系数的增大。
MnO2 doped lanthanum calcium manganese oxide polycrystalline ceramic target material and preparation method thereof
一种MnO2掺杂镧钙锰氧多晶陶瓷靶材及制备方法
LI YULE (author) / TIAN LANLAN (author) / WANG SHAOZHENG (author) / HOU RUITING (author) / ZHANG HUI (author) / CHEN QINGMING (author)
2023-11-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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