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arXiv 1707.04709cond-mat.mtrl-sci
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轻掺杂M型六角铁氧体的结构和磁性

Structural and magnetic properties of lightly doped M-type hexaferrites

Sami H. Mahmood, Ahmad M. Awadallah, Ibrahim Bsoul, Yazan Maswadeh

摘要:

采用高能球磨和1200° C烧结法制备了钒掺杂SrM六角铁氧体(SrFe 12-xFe 12 O 19,x = 0.2,0.4)和铕掺杂BaM六角铁氧体(Ba0.8Eu0.2Fe12O19)。X射线衍射分析表明,V掺杂SrM样品表现出相分离,纯SrM磁性相与Sr 3(VO 4)2钒酸盐和α-Fe 2 O3铁氧化物相共存。此外,Eu取代的BaM六角铁氧体显示了与α-Fe_2O_3第二相共存的纯BaM相和Eu-石榴石次要相的形成。虽然样品的磁性能相对于纯六角铁氧体性能恶化,被取代的样品的磁参数被发现是实际应用的潜在重要性。此外,研究结果表明,高品质的SrM六角铁氧体,和六角铁氧体/石榴石复合材料的制备方法。

英文摘要:

Vanadium substituted SrM hexaferrites (SrFe12-xVxO19 with x = 0.2, 0.4) and Eu-substituted BaM hexaferrite (Ba0.8Eu0.2Fe12O19) were prepared by high energy ball milling and sintering at 1200° C. X-ray diffraction measurements revealed that the V-substituted SrM samples exhibited phase separation resulting in the coexistence of the pure SrM magnetic phase with nonmagnetic Sr3(VO4)2 vanadate and α-Fe2O3 iron oxide phase. Also, the Eu-substituted BaM hexaferrite revealed the formation of the pure BaM phase coexisting with α-Fe2O3 secondary phase, and Eu-garnet minor phase. Although the magnetic properties of the samples deteriorated with respect to pure hexaferrite properties, the magnetic parameters of the substituted samples were found to be of potential importance for practical applications. Further, the results of the study suggest methods for the preparation of high quality SrM hexaferrites, and hexaferrite/garnet composites.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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