A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of metastable-phase manganese-based quadruple perovskite strong correlation oxide
The invention discloses a preparation method of a metastable-phase manganese-based quadruple perovskite oxide material, and belongs to the field of functional materials and magnetoresistance materials. The crystal lattice matching relation between alkali metal halide and alkaline earth metal halide fluxing agents and the metastable-phase manganese-based quadruple perovskite oxide material is utilized, the forward Gibbs free energy of the synthesis reaction is reduced, and the fluxing agents can serve as solvents to dissolve oxide raw materials after being molten. In the cooling process, the metastable-phase manganese-based quadruple perovskite oxide is nucleated and grows on the surface of the fluxing agent crystal in a non-uniform nucleation mode. According to the invention, the wide-range regulation and control of the metastable-phase manganese-based quadruple perovskite oxide magnetism is realized by regulating and controlling the Cu-site element type proportion; the valence state of Mn ions can also be changed by doping the Mn-site element, so that the electrical transport characteristic of the metastable-phase quadruple perovskite oxide is regulated and controlled; the synthesis pressure of the material can be remarkably reduced, and the amount-released preparation of the metastable-phase manganese-based quadruple perovskite oxide is realized, so that the preparation requirements of magnetic electronic devices and spinning electronic devices are met.
一种亚稳相锰基四重钙钛矿氧化物材料的制备方法，属于功能材料与磁电阻材料领域。利用碱金属卤化物、碱土金属卤化物助熔剂与亚稳相锰基四重钙钛矿氧化物材料的晶格匹配关系，降低合成反应的正向吉布斯自由能，助熔剂熔化后可以作为溶剂溶解氧化物原料，在降温过程中亚稳相锰基四重钙钛矿氧化物以非均匀形核的方式在助熔剂晶体表面形核生长。本发明通过Cu位元素种类比例的调控，实现对亚稳相锰基四重钙钛矿氧化物磁性的宽范围调控；Mn位元素的掺杂同样会改变Mn离子的价态，从而调控亚稳相四重钙钛矿氧化物的电输运特性；能显著降低材料的合成压力，并实现亚稳相锰基四重钙钛矿氧化物的放量制备，以满足磁电子器件、自旋电子器件的制备需求。
Preparation method of metastable-phase manganese-based quadruple perovskite strong correlation oxide
The invention discloses a preparation method of a metastable-phase manganese-based quadruple perovskite oxide material, and belongs to the field of functional materials and magnetoresistance materials. The crystal lattice matching relation between alkali metal halide and alkaline earth metal halide fluxing agents and the metastable-phase manganese-based quadruple perovskite oxide material is utilized, the forward Gibbs free energy of the synthesis reaction is reduced, and the fluxing agents can serve as solvents to dissolve oxide raw materials after being molten. In the cooling process, the metastable-phase manganese-based quadruple perovskite oxide is nucleated and grows on the surface of the fluxing agent crystal in a non-uniform nucleation mode. According to the invention, the wide-range regulation and control of the metastable-phase manganese-based quadruple perovskite oxide magnetism is realized by regulating and controlling the Cu-site element type proportion; the valence state of Mn ions can also be changed by doping the Mn-site element, so that the electrical transport characteristic of the metastable-phase quadruple perovskite oxide is regulated and controlled; the synthesis pressure of the material can be remarkably reduced, and the amount-released preparation of the metastable-phase manganese-based quadruple perovskite oxide is realized, so that the preparation requirements of magnetic electronic devices and spinning electronic devices are met.
一种亚稳相锰基四重钙钛矿氧化物材料的制备方法，属于功能材料与磁电阻材料领域。利用碱金属卤化物、碱土金属卤化物助熔剂与亚稳相锰基四重钙钛矿氧化物材料的晶格匹配关系，降低合成反应的正向吉布斯自由能，助熔剂熔化后可以作为溶剂溶解氧化物原料，在降温过程中亚稳相锰基四重钙钛矿氧化物以非均匀形核的方式在助熔剂晶体表面形核生长。本发明通过Cu位元素种类比例的调控，实现对亚稳相锰基四重钙钛矿氧化物磁性的宽范围调控；Mn位元素的掺杂同样会改变Mn离子的价态，从而调控亚稳相四重钙钛矿氧化物的电输运特性；能显著降低材料的合成压力，并实现亚稳相锰基四重钙钛矿氧化物的放量制备，以满足磁电子器件、自旋电子器件的制备需求。
Preparation method of metastable-phase manganese-based quadruple perovskite strong correlation oxide
一种亚稳相锰基四重钙钛矿强关联氧化物的制备方法
CHEN JIKUN (author) / LEI WEI (author) / BIAN YI (author)
2024-01-12
Patent
Electronic Resource
Chinese
Preparation method of perovskite manganese oxide spherical refrigerant
| European Patent Office | 2024
Preparation method of single-phase five-component high-entropy perovskite manganese oxide ceramic
| European Patent Office | 2023
Preparation method of room-temperature high-TCR perovskite manganese oxide film
| European Patent Office | 2024
| European Patent Office | 2024
| British Library Online Contents | 2016