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Ferrimagnetic semimetal and preparation method thereof
The invention provides a ferrimagnetism semimetal. The chemical formula of the ferrimagnetism semimetal is LaCu3Fe2Re2O12. The invention also provides a method for preparing the ferrimagnetic semimetal. The method comprises the following steps: (1), grinding and mixing La2O3, Fe2O3, Re2O7, CuO and Re powder in a protective gas environment according to a molar ratio of 7: 21: 9: 42: 10 to obtain amixture; (2), sealing and wrapping the mixture, and carrying out synthesizing; and (3), cooling the synthetic product to room temperature, and relieving the pressure to obtain the ferromagnetic semimetal LaCu3Fe2Re2O12. The ferromagnetic semimetal LaCu3Fe2Re2O12 provided by the invention has high Curie temperature (Tc-620K), wide band gap (-2.3 eV) and large low-field magnetic resistance (about 4%at 2K and 0.8 T), and has potential application value in future spinning electronic devices.
本发明提供一种亚铁磁性半金属，其化学式为LaCuFeReO。本发明还提供一种制备本发明的亚铁磁性半金属的方法，其包括以下步骤：(1)将LaO、FeO、ReO、CuO和Re粉以摩尔比7:21:9:42:10在保护性气体环境中进行研磨混合，得到混合物；(2)将所述混合物密封包裹后，进行合成；(3)将合成产物降温至室温，卸压，从而制得亚铁磁性半金属LaCuFeReO。本发明的亚铁磁性半金属LaCuFeReO具有高的居里温度(Tc～620K)，宽的带隙(～2.3eV)，以及大的低场磁阻(在2K和0.8T时，为大约4％)，在未来的自旋电子器件中有潜在应用价值。
Ferrimagnetic semimetal and preparation method thereof
The invention provides a ferrimagnetism semimetal. The chemical formula of the ferrimagnetism semimetal is LaCu3Fe2Re2O12. The invention also provides a method for preparing the ferrimagnetic semimetal. The method comprises the following steps: (1), grinding and mixing La2O3, Fe2O3, Re2O7, CuO and Re powder in a protective gas environment according to a molar ratio of 7: 21: 9: 42: 10 to obtain amixture; (2), sealing and wrapping the mixture, and carrying out synthesizing; and (3), cooling the synthetic product to room temperature, and relieving the pressure to obtain the ferromagnetic semimetal LaCu3Fe2Re2O12. The ferromagnetic semimetal LaCu3Fe2Re2O12 provided by the invention has high Curie temperature (Tc-620K), wide band gap (-2.3 eV) and large low-field magnetic resistance (about 4%at 2K and 0.8 T), and has potential application value in future spinning electronic devices.
本发明提供一种亚铁磁性半金属，其化学式为LaCuFeReO。本发明还提供一种制备本发明的亚铁磁性半金属的方法，其包括以下步骤：(1)将LaO、FeO、ReO、CuO和Re粉以摩尔比7:21:9:42:10在保护性气体环境中进行研磨混合，得到混合物；(2)将所述混合物密封包裹后，进行合成；(3)将合成产物降温至室温，卸压，从而制得亚铁磁性半金属LaCuFeReO。本发明的亚铁磁性半金属LaCuFeReO具有高的居里温度(Tc～620K)，宽的带隙(～2.3eV)，以及大的低场磁阻(在2K和0.8T时，为大约4％)，在未来的自旋电子器件中有潜在应用价值。
Ferrimagnetic semimetal and preparation method thereof
亚铁磁性半金属及其制备方法
LONG YOUWEN (author) / LIU ZHEHONG (author)
2020-08-25
Patent
Electronic Resource
Chinese
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