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Range preparation method of metastable-phase rare earth nickel-based oxide electronic phase change material
The invention discloses a preparation method of a metastable-phase rare earth nickel-based strong correlation oxide material, and belongs to the field of phase change materials and functional materials. According to the method, the target rare earth nickel-based oxide is used as homogeneous seed crystal, the heterogeneous nucleation process is promoted, and the forward Gibbs free energy of the synthesis reaction is reduced, so that the thermodynamic metastable-phase rare earth nickel-based oxide ceramic is prepared under the condition of high oxygen pressure. According to the invention, the distortion degree of NiO6 and BO6 octahedrons is influenced by regulating and controlling the types and proportions of Re-site and B-site elements, so that the phase transition temperature and the electrical transport characteristic of the metastable-phase rare earth nickel-based oxide are regulated and controlled; the synthesis pressure of the material can be remarkably reduced, the technological process for preparing the material is simplified, and the amount-released preparation of the metastable-phase rare earth nickel-based oxide is realized, so that the preparation requirements of strong correlation logic devices, mutation type sensitive resistance devices and infrared camouflage devices are met.
一种亚稳相稀土镍基强关联氧化物材料的制备方法，属于相变材料与功能材料领域。本发明利用目标稀土镍基氧化物作为同质籽晶，促进非均匀形核过程，降低合成反应正向吉布斯自由能，从而在高氧压条件下制备热力学亚稳相稀土镍基氧化物陶瓷。本发明通过调控Re位、B位元素种类及比例，影响NiO6、BO6八面体的扭曲程度从而实现对亚稳相稀土镍基氧化物相变温度和电输运特性的调控；能显著降低材料的合成压力，简化制备材料的工艺流程，并实现亚稳相稀土镍基氧化物的放量制备，以满足强关联逻辑器件、突变式敏感电阻器件和红外伪装器件的制备需求。
Range preparation method of metastable-phase rare earth nickel-based oxide electronic phase change material
The invention discloses a preparation method of a metastable-phase rare earth nickel-based strong correlation oxide material, and belongs to the field of phase change materials and functional materials. According to the method, the target rare earth nickel-based oxide is used as homogeneous seed crystal, the heterogeneous nucleation process is promoted, and the forward Gibbs free energy of the synthesis reaction is reduced, so that the thermodynamic metastable-phase rare earth nickel-based oxide ceramic is prepared under the condition of high oxygen pressure. According to the invention, the distortion degree of NiO6 and BO6 octahedrons is influenced by regulating and controlling the types and proportions of Re-site and B-site elements, so that the phase transition temperature and the electrical transport characteristic of the metastable-phase rare earth nickel-based oxide are regulated and controlled; the synthesis pressure of the material can be remarkably reduced, the technological process for preparing the material is simplified, and the amount-released preparation of the metastable-phase rare earth nickel-based oxide is realized, so that the preparation requirements of strong correlation logic devices, mutation type sensitive resistance devices and infrared camouflage devices are met.
一种亚稳相稀土镍基强关联氧化物材料的制备方法，属于相变材料与功能材料领域。本发明利用目标稀土镍基氧化物作为同质籽晶，促进非均匀形核过程，降低合成反应正向吉布斯自由能，从而在高氧压条件下制备热力学亚稳相稀土镍基氧化物陶瓷。本发明通过调控Re位、B位元素种类及比例，影响NiO6、BO6八面体的扭曲程度从而实现对亚稳相稀土镍基氧化物相变温度和电输运特性的调控；能显著降低材料的合成压力，简化制备材料的工艺流程，并实现亚稳相稀土镍基氧化物的放量制备，以满足强关联逻辑器件、突变式敏感电阻器件和红外伪装器件的制备需求。
Range preparation method of metastable-phase rare earth nickel-based oxide electronic phase change material
一种亚稳相稀土镍基氧化物电子相变材料的放量制备法
CHEN JIKUN (author) / LEI WEI (author) / BIAN YI (author)
2024-11-29
Patent
Electronic Resource
Chinese
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