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Manganese-doped barium strontium titanate ceramic with high electrocaloric effect as well as preparation method and application of manganese-doped barium strontium titanate ceramic
The invention belongs to the technical field of ceramics, and particularly relates to manganese-doped barium strontium titanate ceramic with a high electrocaloric effect as well as a preparation method and application of the manganese-doped barium strontium titanate ceramic. The Curie temperature of the manganese-doped barium strontium titanate ceramic is close to room temperature, and the use temperature suitable for an actual electrocaloric refrigeration device close to the room temperature interval is obtained; secondly, manganese ions are doped, so that the dielectric property, the polarization property and the electrocaloric effect of the manganese-doped barium strontium titanate ceramic are further improved, and higher electrocaloric response can be obtained; due to co-doping of strontium ions and manganese ions, the manganese-doped barium strontium titanate ceramic shows relaxation type ferroelectric characteristics, the working temperature interval of the ceramic material is widened, and the temperature stability of the material performance is improved. The manganese-doped barium strontium titanate ceramic is wide in applicable temperature range, high in temperature changeand high in electrocaloric effect, the problems that the temperature range of electrocaloric response of barium titanate is narrow and the working temperature is far higher than the room temperature are solved, and an environment-friendly electrocaloric material with great prospects is provided for an electrocaloric refrigeration device.
本发明属于陶瓷技术领域，尤其涉及一种高电卡效应的掺锰钛酸锶钡陶瓷及其制备方法和应用。本发明掺锰钛酸锶钡陶瓷的居里温度为室温附近，获得适用于实际电卡制冷器件接近室温区间的使用温度；其次，掺杂锰离子进一步改善了掺锰钛酸锶钡陶瓷的介电性能，极化性能以及电卡效应，能获得更高的电卡响应；锶离子和锰离子的共掺杂让掺锰钛酸锶钡陶瓷展现出弛豫型铁电体特征，扩宽陶瓷材料的工作温度区间，提高材料性能的温度稳定性。本发明掺锰钛酸锶钡陶瓷适用温度范围宽，温变高且电卡效应高，解决了钛酸钡的电卡响应的温度范围较窄以及工作温度远高于室温的问题，为电卡制冷器件提供了一种环境友好的极有前景的电卡材料。
Manganese-doped barium strontium titanate ceramic with high electrocaloric effect as well as preparation method and application of manganese-doped barium strontium titanate ceramic
The invention belongs to the technical field of ceramics, and particularly relates to manganese-doped barium strontium titanate ceramic with a high electrocaloric effect as well as a preparation method and application of the manganese-doped barium strontium titanate ceramic. The Curie temperature of the manganese-doped barium strontium titanate ceramic is close to room temperature, and the use temperature suitable for an actual electrocaloric refrigeration device close to the room temperature interval is obtained; secondly, manganese ions are doped, so that the dielectric property, the polarization property and the electrocaloric effect of the manganese-doped barium strontium titanate ceramic are further improved, and higher electrocaloric response can be obtained; due to co-doping of strontium ions and manganese ions, the manganese-doped barium strontium titanate ceramic shows relaxation type ferroelectric characteristics, the working temperature interval of the ceramic material is widened, and the temperature stability of the material performance is improved. The manganese-doped barium strontium titanate ceramic is wide in applicable temperature range, high in temperature changeand high in electrocaloric effect, the problems that the temperature range of electrocaloric response of barium titanate is narrow and the working temperature is far higher than the room temperature are solved, and an environment-friendly electrocaloric material with great prospects is provided for an electrocaloric refrigeration device.
本发明属于陶瓷技术领域，尤其涉及一种高电卡效应的掺锰钛酸锶钡陶瓷及其制备方法和应用。本发明掺锰钛酸锶钡陶瓷的居里温度为室温附近，获得适用于实际电卡制冷器件接近室温区间的使用温度；其次，掺杂锰离子进一步改善了掺锰钛酸锶钡陶瓷的介电性能，极化性能以及电卡效应，能获得更高的电卡响应；锶离子和锰离子的共掺杂让掺锰钛酸锶钡陶瓷展现出弛豫型铁电体特征，扩宽陶瓷材料的工作温度区间，提高材料性能的温度稳定性。本发明掺锰钛酸锶钡陶瓷适用温度范围宽，温变高且电卡效应高，解决了钛酸钡的电卡响应的温度范围较窄以及工作温度远高于室温的问题，为电卡制冷器件提供了一种环境友好的极有前景的电卡材料。
Manganese-doped barium strontium titanate ceramic with high electrocaloric effect as well as preparation method and application of manganese-doped barium strontium titanate ceramic
一种高电卡效应的掺锰钛酸锶钡陶瓷及其制备方法和应用
LU SHENGGUO (author) / NIU XIANG (author) / JIAN XIAODONG (author) / LI HAOXUAN (author) / LIANG WEI (author) / YAO YINGBANG (author) / TAO TAO (author) / LIANG BO (author)
2020-10-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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