磁性材料及器件
磁性材料及器件
자성재료급기건
JOURNAL OF MAGNETIC MATERIALS AND DEVICES
2013年
2期
43-45
,共3页
Ni0.6Zn0.4Fe2O4铁氧体%纳米晶粒%微米晶%微波磁导率%微波吸收
Ni0.6Zn0.4Fe2O4鐵氧體%納米晶粒%微米晶%微波磁導率%微波吸收
Ni0.6Zn0.4Fe2O4철양체%납미정립%미미정%미파자도솔%미파흡수
Ni0.6Zn0.4Fe2O4 ferrite%nanoparticles%microcrystalline%microwave permeability%microwave absorption
用水热法制备了平均晶粒尺寸为40 nm 的Ni0.6Zn0.4Fe2O4铁氧体八面体颗粒,同时采用溶胶-凝胶高温烧结法合成 Ni0.6Zn0.4Fe2O4微米晶颗粒.用矢量网络分析仪测试了铁氧体/石蜡混合材料在300MHz~2GHz频段的复磁导率和复介电常数.实验结果表明Ni0.6Zn0.4Fe2O4铁氧体纳米晶粒样品与微米晶样品相比具有更高的磁导率(实部 rμ′在3.3~1.65之间,磁导率虚部 rμ′在1.1左右)、更大的磁损耗以及更优异的微波吸收特性.
用水熱法製備瞭平均晶粒呎吋為40 nm 的Ni0.6Zn0.4Fe2O4鐵氧體八麵體顆粒,同時採用溶膠-凝膠高溫燒結法閤成 Ni0.6Zn0.4Fe2O4微米晶顆粒.用矢量網絡分析儀測試瞭鐵氧體/石蠟混閤材料在300MHz~2GHz頻段的複磁導率和複介電常數.實驗結果錶明Ni0.6Zn0.4Fe2O4鐵氧體納米晶粒樣品與微米晶樣品相比具有更高的磁導率(實部 rμ′在3.3~1.65之間,磁導率虛部 rμ′在1.1左右)、更大的磁損耗以及更優異的微波吸收特性.
용수열법제비료평균정립척촌위40 nm 적Ni0.6Zn0.4Fe2O4철양체팔면체과립,동시채용용효-응효고온소결법합성 Ni0.6Zn0.4Fe2O4미미정과립.용시량망락분석의측시료철양체/석사혼합재료재300MHz~2GHz빈단적복자도솔화복개전상수.실험결과표명Ni0.6Zn0.4Fe2O4철양체납미정립양품여미미정양품상비구유경고적자도솔(실부 rμ′재3.3~1.65지간,자도솔허부 rμ′재1.1좌우)、경대적자손모이급경우이적미파흡수특성.
Ni0.6Zn0.4Fe2O4 ferrite octahedral nanoparticles with mean crystallite size of about 40 nm were synthesized via hydrothermal route, and the Ni0.6Zn0.4Fe2O4 microcrystalline particles were also synthesized by sol-gel high temperature sintering method. In 300MHz-2GHz frequency range, the complex permeability and permittivity for Ni0.6Zn0.4Fe2O4/wax composites were measured by vector network analyzer. The results showed that Ni0.6Zn0.4Fe2O4 nanoparticle sample presents higher microwave permeability, magnetic loss tangent and more excellent microwave absorption property than microcrystalline sample.
