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Praseodymium-yttrium co-doped M-type hexagonal ferrite material as well as preparation method and application thereof
The invention provides a praseodymium and yttrium co-doped M-type hexagonal ferrite material and a preparation method and application thereof, the chemical formula of the praseodymium and yttrium co-doped M-type hexagonal ferrite material comprises SrzFe12-x-yPrxYyO19, 0.05 < = x < = 2.0, 0.05 < = y < = 1.5, 0.9 < = z < = 1.4, and x/y > 1/7. Praseodymium and yttrium are doped into M-type hexagonal ferrite, Pr < 4 + > is formed by utilizing the characteristics of variable valence, large ion radius and the like of praseodymium and combining with Fe < 3 + >-deficient and Sr < 2 + >-rich environments, so that the grain size is reduced, a polyhedral aggregate is formed, meanwhile, multiple impure phases are formed by doping praseodymium and yttrium, interfaces are formed between the impure phases and a main phase, and interface polarization is promoted. And conversion from Pr < 3 + > to Pr < 4 + > is beneficial to formation of oxygen vacancies and Fe < 2 + >, so that the dielectric property of the material is remarkably improved, the microwave absorption performance is enhanced, and the material can be applied as a wave-absorbing material.
本发明提供了一种镨钇共掺杂M型六角铁氧体材料及其制备方法和应用，所述镨钇共掺杂M型六角铁氧体材料的化学式包括SrzFe12‑x‑yPrxYyO19，其中，0.05≤x≤2.0，0.05≤y≤1.5，0.9≤z≤1.4，且x/y＞1/7。本发明将镨和钇掺入M型六角铁氧体中，利用镨的变价和离子半径较大等特点，并结合缺Fe3+和富Sr2+的环境，使得Pr4+形成，从而减小晶粒尺寸并形成多面体聚集体，同时镨钇掺杂形成多种杂相，杂相与主相之间形成界面，促进界面极化。Pr3+到Pr4+的转化有利于氧空位和Fe2+的形成，从而显著改善材料的介电性能并增强微波吸收性能，可作为吸波材料进行应用。
Praseodymium-yttrium co-doped M-type hexagonal ferrite material as well as preparation method and application thereof
The invention provides a praseodymium and yttrium co-doped M-type hexagonal ferrite material and a preparation method and application thereof, the chemical formula of the praseodymium and yttrium co-doped M-type hexagonal ferrite material comprises SrzFe12-x-yPrxYyO19, 0.05 < = x < = 2.0, 0.05 < = y < = 1.5, 0.9 < = z < = 1.4, and x/y > 1/7. Praseodymium and yttrium are doped into M-type hexagonal ferrite, Pr < 4 + > is formed by utilizing the characteristics of variable valence, large ion radius and the like of praseodymium and combining with Fe < 3 + >-deficient and Sr < 2 + >-rich environments, so that the grain size is reduced, a polyhedral aggregate is formed, meanwhile, multiple impure phases are formed by doping praseodymium and yttrium, interfaces are formed between the impure phases and a main phase, and interface polarization is promoted. And conversion from Pr < 3 + > to Pr < 4 + > is beneficial to formation of oxygen vacancies and Fe < 2 + >, so that the dielectric property of the material is remarkably improved, the microwave absorption performance is enhanced, and the material can be applied as a wave-absorbing material.
本发明提供了一种镨钇共掺杂M型六角铁氧体材料及其制备方法和应用，所述镨钇共掺杂M型六角铁氧体材料的化学式包括SrzFe12‑x‑yPrxYyO19，其中，0.05≤x≤2.0，0.05≤y≤1.5，0.9≤z≤1.4，且x/y＞1/7。本发明将镨和钇掺入M型六角铁氧体中，利用镨的变价和离子半径较大等特点，并结合缺Fe3+和富Sr2+的环境，使得Pr4+形成，从而减小晶粒尺寸并形成多面体聚集体，同时镨钇掺杂形成多种杂相，杂相与主相之间形成界面，促进界面极化。Pr3+到Pr4+的转化有利于氧空位和Fe2+的形成，从而显著改善材料的介电性能并增强微波吸收性能，可作为吸波材料进行应用。
Praseodymium-yttrium co-doped M-type hexagonal ferrite material as well as preparation method and application thereof
一种镨钇共掺杂M型六角铁氧体材料及其制备方法和应用
ZHAO QIANQIAN (Autor:in) / JING XIAODONG (Autor:in) / ZHAO TONGYUN (Autor:in) / GONG HUAYANG (Autor:in)
28.06.2024
Patent
Elektronische Ressource
Chinesisch
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