低温烧结锆掺杂钇铁石榴石(YIG)的磁性能研究  

Study on the Magnetic Properties of Zr-substituted YIG by Low-temperature Sintering

作　　者：王鹭杰 王丽丽[1] 曹晓琴[1] 李山东[2] 赖发春[1] 黄志高[1] 

机构地区：[1]福建师范大学物理与能源学院,福建福州350117 [2]青岛大学物理科学学院,山东青岛266071

出　　处：《福建师范大学学报（自然科学版）》2015年第3期46-49,共4页Journal of Fujian Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(11374052);国家自然科学基金青年科学基金资助项目(51202031);福建省教育厅科技项目(JB14029)

摘　　要：通过溶胶-凝胶法用1 100℃低温烧结制得了(Y3-xCax)(Fe5-xZrx)O12纳米颗粒.利用谢乐公式计算得未掺杂YIG样品的平均粒径为88.6 nm,XRD结果表明掺杂样品均为YIG纯相.VSM表征发现当掺杂量x=0.3时,样品的Ms值最大,达到28.4 Am2·kg-1,继续增大掺杂量,由于超交换作用削弱导致磁性减弱;样品的Hc随掺杂量增大呈减小趋势.综合Ms值和Hc值,认为当x=0.3时,样品的磁性能最好,此时Ms=28.4 Am2·kg-1,Hc=1.69 k A·m-1.Low-tempreture sintering is one of the most popular topics,by which the ferrites may co-sintered with electrode, and enhances their applications. In this paper,（Y3- xCax）（Fe5- xZrx） O12（x = 0 - 0. 5） were prepared by sol-gel under 1 100 ℃ low-temperature.The average size of the sample without substitution was about 88. 6 nm calculated by Scherrer formula. XRD showed no impurity in all samples. The sample displayed the largest Msat x = 0. 3. Howerver,the values of Msturned smaller when x 0. 3,which might be due to the decrease of superexchange interaction. The Hcvalues tended to decrease with the increase of Zr addition. It is considered that the sample at x = 0. 3 showed the best soft-magnetic properties,the Msand Hcvalue of which was 28. 4 Am^2·kg^- 1and 1. 69 kA·m^-1 respectively.

关 键 词：YIG 溶胶-凝胶法 低温烧结 掺杂 磁性能 

分 类 号：TM277.3[一般工业技术—材料科学与工程]