Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method and application of low-temperature negative magnetization material
The invention relates to the field of magnetized materials, in particular to a preparation method and application of a low-temperature negative magnetized material, and the preparation method comprises the following steps: (1) weighing La (NO3). 6H2O, Gd (NO3). 6H2O and Cr (NO3). 9H2O according to the stoichiometric ratio of La1-xGdxCrO3, dissolving the materials in distilled water one by one, and after the materials are completely dissolved, adding citric acid into the dissolved solution to prepare a sol solution; (2) heating and stirring the sol solution by using a magnetic stirrer until gel is formed, and then drying in a drying oven to obtain precursor powder; (3) sufficiently grinding the precursor powder, roasting the precursor powder in a muffle furnace, taking out the precursor powder, and pressing the precursor powder into wafers in a tablet press; and (4) the wafer is put into a sintering furnace to be sintered, then natural cooling is conducted, and the La1-xGdxCrO3 material is prepared. The positive and negative magnetization intensity of the La1-xGdxCrO3 material is 10 <-1 > order of magnitude, the negative magnetization state is stable, and the positive and negative magnetization state switching effect is more remarkable.
本发明涉及磁化材料领域，具体涉及一种低温负磁化材料的制备方法及应用，包括(1)按La1‑xGdxCrO3化学计量比称量La(NO3)·6H2O、Gd(NO3)·6H2O和Cr(NO3)·9H2O，并逐一溶解于蒸馏水中，待完全溶解后，向溶解液中再加入柠檬酸，制得溶胶溶液；(2)使用磁力搅拌器加热搅拌溶胶溶液直至形成凝胶，而后放入烘箱中烘干，得到前驱体粉末；(3)将前驱体粉末充分研磨后放入马弗炉中焙烧，取出后放入压片机中压成圆片；(4)将圆片放入烧结炉中进行烧结处理，而后自然冷却，制得La1‑xGdxCrO3材料。本发明中La1‑xGdxCrO3材料正负磁化强度在10‑1数量级，负磁化态稳定，磁化状态在正负间的切换效果更加显著。
Preparation method and application of low-temperature negative magnetization material
The invention relates to the field of magnetized materials, in particular to a preparation method and application of a low-temperature negative magnetized material, and the preparation method comprises the following steps: (1) weighing La (NO3). 6H2O, Gd (NO3). 6H2O and Cr (NO3). 9H2O according to the stoichiometric ratio of La1-xGdxCrO3, dissolving the materials in distilled water one by one, and after the materials are completely dissolved, adding citric acid into the dissolved solution to prepare a sol solution; (2) heating and stirring the sol solution by using a magnetic stirrer until gel is formed, and then drying in a drying oven to obtain precursor powder; (3) sufficiently grinding the precursor powder, roasting the precursor powder in a muffle furnace, taking out the precursor powder, and pressing the precursor powder into wafers in a tablet press; and (4) the wafer is put into a sintering furnace to be sintered, then natural cooling is conducted, and the La1-xGdxCrO3 material is prepared. The positive and negative magnetization intensity of the La1-xGdxCrO3 material is 10 <-1 > order of magnitude, the negative magnetization state is stable, and the positive and negative magnetization state switching effect is more remarkable.
本发明涉及磁化材料领域，具体涉及一种低温负磁化材料的制备方法及应用，包括(1)按La1‑xGdxCrO3化学计量比称量La(NO3)·6H2O、Gd(NO3)·6H2O和Cr(NO3)·9H2O，并逐一溶解于蒸馏水中，待完全溶解后，向溶解液中再加入柠檬酸，制得溶胶溶液；(2)使用磁力搅拌器加热搅拌溶胶溶液直至形成凝胶，而后放入烘箱中烘干，得到前驱体粉末；(3)将前驱体粉末充分研磨后放入马弗炉中焙烧，取出后放入压片机中压成圆片；(4)将圆片放入烧结炉中进行烧结处理，而后自然冷却，制得La1‑xGdxCrO3材料。本发明中La1‑xGdxCrO3材料正负磁化强度在10‑1数量级，负磁化态稳定，磁化状态在正负间的切换效果更加显著。
Preparation method and application of low-temperature negative magnetization material
一种低温负磁化材料的制备方法及应用
DUAN FEI (Autor:in) / LIU XIANSONG (Autor:in) / KAN XUCAI (Autor:in) / FENG SHUANGJIU (Autor:in) / LIU WEIQI (Autor:in)
03.05.2024
Patent
Elektronische Ressource
Chinesisch
Application of NTC (Negative Temperature Coefficient) material in preparation of electrode material
| Europäisches Patentamt | 2024
Preparation method of high-temperature negative temperature coefficient thermistor material
| Europäisches Patentamt | 2020
Preparation method of negative temperature coefficient thermistor material Sr8Ti7S21
| Europäisches Patentamt | 2023
Negative-temperature porous grouting material and preparation method thereof
| Europäisches Patentamt | 2024
HIGH TEMPERATURE NEGATIVE TEMPERATURE COEFFICIENT THERMISTOR MATERIAL AND PREPARATION METHOD THEREOF
| Europäisches Patentamt | 2019