Research of Structure and Magnetic Properties of Yttrium-doped M-type Strontium Ferrite

Q4 Materials Science

Cailiao Daobao/Materials Review Pub Date : 2014-01-01 DOI:10.14233/ajchem.2014.16767

Tu Furon

{"title":"Research of Structure and Magnetic Properties of Yttrium-doped M-type Strontium Ferrite","authors":"Tu Furon","doi":"10.14233/ajchem.2014.16767","DOIUrl":null,"url":null,"abstract":"Yttrium-doped M-type strontium ferrite SrYxFe(12-x)O19(x=0,0.25,0.5,0.75,1.0)calcined materials were prepared by solid-phase sintering method at 1150℃for 3h.Then the calcined materials were pressed for magnets under the condition of oriented magnetic field and sintered at 1295℃for 3h.X-ray diffraction,scanning electron microscope and magnetic tester were used to analyze the phase structure of the sintered magnets,the surface morphology of the sintered magnet and the magnetic properties of the sintered magnets respectively.The results showed that with the increase of yttrium-doped,the lattice constant achanges little,cincreases slowly,a/c first increases and then decreases,crystal X-ray density dX-rayapproximation increases linearly.SEM showed that the magnet has prepared a typical hexagonal structure morphology.Magnetic studies showed that with the doping of yttrium increase,the remanence Brincreasing monotonically,intrinsic coercivity Hcjand maximum energy product(BH)maxand coercivity magnetic induction Hcbfirst increasesd and then decreased.When x=1.0,the remanence Brreach maximum with 420.7mT,but the intrinsic coercivity Hcjdecreased to a minimum value;when x=0.75,the intrinsic coercivity Hcjhave a maximum value of 323.7kA ·m-1,and the remanence Brreached 410.4mT.","PeriodicalId":37461,"journal":{"name":"Cailiao Daobao/Materials Review","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.14233/ajchem.2014.16767","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cailiao Daobao/Materials Review","FirstCategoryId":"1089","ListUrlMain":"https://doi.org/10.14233/ajchem.2014.16767","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Materials Science","Score":null,"Total":0}

引用次数: 5

Abstract

Yttrium-doped M-type strontium ferrite SrYxFe(12-x)O19(x=0,0.25,0.5,0.75,1.0)calcined materials were prepared by solid-phase sintering method at 1150℃for 3h.Then the calcined materials were pressed for magnets under the condition of oriented magnetic field and sintered at 1295℃for 3h.X-ray diffraction,scanning electron microscope and magnetic tester were used to analyze the phase structure of the sintered magnets,the surface morphology of the sintered magnet and the magnetic properties of the sintered magnets respectively.The results showed that with the increase of yttrium-doped,the lattice constant achanges little,cincreases slowly,a/c first increases and then decreases,crystal X-ray density dX-rayapproximation increases linearly.SEM showed that the magnet has prepared a typical hexagonal structure morphology.Magnetic studies showed that with the doping of yttrium increase,the remanence Brincreasing monotonically,intrinsic coercivity Hcjand maximum energy product(BH)maxand coercivity magnetic induction Hcbfirst increasesd and then decreased.When x=1.0,the remanence Brreach maximum with 420.7mT,but the intrinsic coercivity Hcjdecreased to a minimum value;when x=0.75,the intrinsic coercivity Hcjhave a maximum value of 323.7kA ·m-1,and the remanence Brreached 410.4mT.

查看原文本刊更多论文

掺钇m型锶铁氧体的结构和磁性能研究

采用固相烧结法，在1150℃下烧结3h，制备了掺钇m型锶铁氧体SrYxFe(12-x)O19(x=0,0.25,0.5,0.75,1.0)煅烧材料。将煅烧后的材料在定向磁场条件下压制成磁体，在1295℃下烧结3h。利用x射线衍射、扫描电镜和磁性测试仪分别对烧结磁体的相结构、表面形貌和磁性能进行了分析。结果表明:随着掺钇量的增加，晶格常数变化不大，增加缓慢，a/c先增大后减小，晶体x射线密度dx射线近似线性增大。扫描电镜显示，该磁体已制备出典型的六边形结构形态。磁性研究表明，随着钇掺杂量的增加，材料的剩余物brbr单调增加，材料的内禀矫顽力hj和最大能积(BH)、最大矫顽力磁感应强度hc先增大后减小。当x=1.0时，剩余力断裂最大，达到420.7mT，而固有矫顽力hcjr减小到最小值;当x=0.75时，固有矫顽力hcjr最大，达到323.7kA·m-1，剩余力断裂达到410.4mT。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Cailiao Daobao/Materials Review Materials Science-Materials Science (all)

CiteScore

1.20

自引率

0.00%

发文量

1802

期刊介绍： Materials Reports (MR) publishes articles which focus on, but are not limited to, the following areas. I.　Innovative functional materials, including new energy materials, optical/electro-nic/magnetic materials, biomedical materials, materials for environment protection and remediation, etc. II.　Advanced structural materials, including structural ceramics, metal materials, civil engineering materials, surface engineering and material connection, composite materials, polymer materials, etc. It is hereby declared that since January 2019, the English title of the Chinese journal Materials Review (Cailiao Daobao) has been changed to Materials Reports, and its original English title Materials Review is invalid. We appreciate your support and look forward your sustained attention to our journal.