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Cobalt-doped perovskite ceramic and preparation method thereof
The invention provides a cobalt-doped perovskite ceramic and a preparation method thereof. The chemical formula is La<0.5>Sr<0.5>Mn<1-x>CoO<3>, and the cobalt doping amount x is more than 0 and less than or equal to 0.5. According to the invention, the perovskite ceramic material is prepared by using a sol-gel method, and in the wet gel treatment process, a process of firstly drying the dry gel in a constant-temperature insulation sleeve and then gradually heating the dry gel to enable the dry gel to be subjected to self-propagating combustion from the bottom of a beaker is adopted, so that the phenomenon that the dry gel powder is combusted and erupted during heat treatment is avoided. According to the cobalt-doped perovskite ceramic disclosed by the invention, a single-phase sample can be obtained in a very wide sintering temperature interval (900-1350 DEG C), a system with the doping amount of 0.15 <= x <= 0.5 has a remarkable exchange bias effect, and the highest exchange bias field can reach 10.3 kOe; and the changes of the sintering temperature and the cobalt ion doping amount have an obvious regulation and control effect on the exchange bias effect and the bias field.
本发明提供了一种钴掺杂钙钛矿陶瓷及其制备方法，化学式为La0.5Sr0.5Mn1‑xCoxO3，钴掺杂量x的范围为：0
Cobalt-doped perovskite ceramic and preparation method thereof
The invention provides a cobalt-doped perovskite ceramic and a preparation method thereof. The chemical formula is La<0.5>Sr<0.5>Mn<1-x>CoO<3>, and the cobalt doping amount x is more than 0 and less than or equal to 0.5. According to the invention, the perovskite ceramic material is prepared by using a sol-gel method, and in the wet gel treatment process, a process of firstly drying the dry gel in a constant-temperature insulation sleeve and then gradually heating the dry gel to enable the dry gel to be subjected to self-propagating combustion from the bottom of a beaker is adopted, so that the phenomenon that the dry gel powder is combusted and erupted during heat treatment is avoided. According to the cobalt-doped perovskite ceramic disclosed by the invention, a single-phase sample can be obtained in a very wide sintering temperature interval (900-1350 DEG C), a system with the doping amount of 0.15 <= x <= 0.5 has a remarkable exchange bias effect, and the highest exchange bias field can reach 10.3 kOe; and the changes of the sintering temperature and the cobalt ion doping amount have an obvious regulation and control effect on the exchange bias effect and the bias field.
本发明提供了一种钴掺杂钙钛矿陶瓷及其制备方法，化学式为La0.5Sr0.5Mn1‑xCoxO3，钴掺杂量x的范围为：0
Cobalt-doped perovskite ceramic and preparation method thereof
一种钴掺杂钙钛矿陶瓷及其制备方法
SHANG CUI (author) / LIU DEWEI (author) / LI TAO (author) / DAI HAIYANG (author) / XUE RENZHONG (author) / ZHANG HUIJUN (author)
2021-07-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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