Perpendicularly oriented barium ferrite thin films with low microwave loss,prepared by pulsed laser deposition

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    摘要 Bariumferrite(BaM)thinfilmsaredepositedonplatinumcoatedsiliconwafersbypulsedlaserdeposition(PLD).Theeffectsofdepositionsubstratetemperatureonthemicrostructure,magneticandmicrowavepropertiesofBaMthinfilmsareinvestigatedindetail.Itisfoundthatmicrostructure,magneticandmicrowavepropertiesofBaMthinfilmareverysensitivetodepositionsubstratetemperature,andexcellentBaMthinfilmisobtainedwhendepositiontemperatureis910℃andoxygenpressureis300mTorr(1Torr=1.3332×102Pa).X-raydiffractionpatternsandatomicforcemicroscopyimagesshowthatthebestthinfilmhasperpendicularorientationandhexagonalmorphology,andthecrystallographicalignmentdegreecanbecalculatedtobe0.94.Hysteresisloopsrevealthatthesquarenessratio(Mr/Ms)isashighas0.93,thesaturatedmagnetizationis4004Gs(1Gs=104T),andtheanisotropyfieldis16.5kOe(1Oe=79.5775A·m-1).Ferromagneticresonancemeasurementsrevealthatthegyromagneticratiois2.8GHz/kOe,andtheferromagneticresonancelinewithis108Oeat50GHz,whichmeansthatthisthinfilmhaslowmicrowaveloss.ThesepropertiesmaketheBaMthinfilmshavepotentialapplicationsinmicrowavedevices.
    机构地区 不详
    出处 《中国物理B:英文版》 2016年6期
    出版日期 2016年06月16日(中国Betway体育网页登陆平台首次上网日期,不代表论文的发表时间)
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