A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Y-type hexagonal ferrite material with dual-element magnetocaloric effect as well as preparation method and application of Y-type hexagonal ferrite material
The invention discloses a Y-type hexagonal ferrite material with a dual-element magnetothermal effect and a preparation method and application thereof, and belongs to the technical field of ferrite ceramic materials, the Y-type hexagonal ferrite material with the dual-element magnetothermal effect is marked as Sr2Zn2-xNixFe12O22 (x = 0.0, 0.8 or 2.0), and the Y-type hexagonal ferrite material with the dual-element magnetothermal effect can be used as a heat sink composite material in a temperature range in which a diamagnetothermal effect exists. For the Sr2Zn2Fe12O22 material, a platform-shaped conventional magnetothermal effect exists near the room temperature and is suitable for Erichson magnetic refrigeration cycle, along with the increase of the doping amount of Ni ions, the magnetic entropy change and the relative refrigeration power are gradually increased and reach the maximum when the doping amount is 0.8, and under the condition that the magnetic field change is 0-90 kOe, the maximum magnetic entropy change reaches 3.16 J/kg K at 4K,-1.02 J/kg K at 16K and 1.33 J/kg K at 354K; and the corresponding relative refrigeration power is 358.68 J/kg.
本发明公开了一种具有双元磁热效应的Y型六角铁氧体材料及其制备方法与应用，属于铁氧体陶瓷材料技术领域，具有双元磁热效应的Y型六角铁氧体材料记为Sr2Zn2‑xNixFe12O22(x＝0.0、0.8或2.0)，在逆磁热效应存在温度范围内可以做热沉复合材料。对于Sr2Zn2Fe12O22材料，在室温附近存在平台状的常规磁热效应适合埃里克森磁致冷循环，随着Ni离子掺杂量的增多，磁熵变和相对制冷功率逐渐增大，并在掺杂量为0.8时达到最大，此时在磁场变化为0～90kOe的条件下，磁熵变在4K时最大达到了3.16J/kg K，16K时为‑1.02J/kg K，354K时为1.33J/kg K，对应的相对制冷功率为358.68J/kg。
Y-type hexagonal ferrite material with dual-element magnetocaloric effect as well as preparation method and application of Y-type hexagonal ferrite material
The invention discloses a Y-type hexagonal ferrite material with a dual-element magnetothermal effect and a preparation method and application thereof, and belongs to the technical field of ferrite ceramic materials, the Y-type hexagonal ferrite material with the dual-element magnetothermal effect is marked as Sr2Zn2-xNixFe12O22 (x = 0.0, 0.8 or 2.0), and the Y-type hexagonal ferrite material with the dual-element magnetothermal effect can be used as a heat sink composite material in a temperature range in which a diamagnetothermal effect exists. For the Sr2Zn2Fe12O22 material, a platform-shaped conventional magnetothermal effect exists near the room temperature and is suitable for Erichson magnetic refrigeration cycle, along with the increase of the doping amount of Ni ions, the magnetic entropy change and the relative refrigeration power are gradually increased and reach the maximum when the doping amount is 0.8, and under the condition that the magnetic field change is 0-90 kOe, the maximum magnetic entropy change reaches 3.16 J/kg K at 4K,-1.02 J/kg K at 16K and 1.33 J/kg K at 354K; and the corresponding relative refrigeration power is 358.68 J/kg.
本发明公开了一种具有双元磁热效应的Y型六角铁氧体材料及其制备方法与应用，属于铁氧体陶瓷材料技术领域，具有双元磁热效应的Y型六角铁氧体材料记为Sr2Zn2‑xNixFe12O22(x＝0.0、0.8或2.0)，在逆磁热效应存在温度范围内可以做热沉复合材料。对于Sr2Zn2Fe12O22材料，在室温附近存在平台状的常规磁热效应适合埃里克森磁致冷循环，随着Ni离子掺杂量的增多，磁熵变和相对制冷功率逐渐增大，并在掺杂量为0.8时达到最大，此时在磁场变化为0～90kOe的条件下，磁熵变在4K时最大达到了3.16J/kg K，16K时为‑1.02J/kg K，354K时为1.33J/kg K，对应的相对制冷功率为358.68J/kg。
Y-type hexagonal ferrite material with dual-element magnetocaloric effect as well as preparation method and application of Y-type hexagonal ferrite material
一种具有双元磁热效应的Y型六角铁氧体材料及其制备方法与应用
ZI ZHENFA (author) / CAO BINGFEI (author) / WU YAODONG (author) / NI JIANGLI (author) / HU JIYU (author)
2024-11-01
Patent
Electronic Resource
Chinese
| European Patent Office | 2016
Z-type hexagonal ferrite magnetoelectric coupling ceramic material and preparation method thereof
| European Patent Office | 2024
| European Patent Office | 2024