Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 조수연 | * |
dc.date.accessioned | 2022-10-27T16:31:42Z | - |
dc.date.available | 2022-10-27T16:31:42Z | - |
dc.date.issued | 2022 | * |
dc.identifier.issn | 2470-1343 | * |
dc.identifier.other | OAK-32212 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/262796 | - |
dc.description.abstract | We synthesized a series of slightly erbium-substituted yttrium iron garnets (Er:YIG), Y3-xErxFe5O12, at different Er concentrations (x = 0, 0.01, 0.05, 0.10, and 0.20) using a solid-state reaction and investigated their structural, magnetic, and optical properties as a function of Er concentration. The volume of the unit cell slightly increased with Er concentration and Er atoms predominately replaced Y atoms in the dodecahedrons of YIG. The optical properties exhibited certain decreases in reflectance in the 1500-1600 nm wavelength range due to the presence of Er3+. Despite the many unpaired 4f electrons in Er3+, the total magnetic moments of Er:YIG showed similar trends with temperatures and magnetic fields above 30 K. An X-ray magnetic circular dichroism study confirmed the robust Fe 3d magnetic moments. However, the magnetic moments suddenly decreased to below 30 K with Er substitution, and the residual magnetism (M-R) and coercive field (H-C) in the magnetic hysteresis loops decreased to below 30 K with Er substitution. This implies that Er substitution in YIG has a negligible effect on magnetic properties over a wide temperature range except below 30 K where the Er 4f spins are coupled antiparallel to the majority Fe 3d spins. Our studies demonstrated that above 30 K the magnetic properties of YIG are retained even with Er substitution, which is evidence that the Er doping scheme is applicable for YIG-based magneto-optical devices in the mid-infrared regime. | * |
dc.language | English | * |
dc.publisher | AMER CHEMICAL SOC | * |
dc.title | Structural, Optical, and Magnetic Properties of Erbium-Substituted Yttrium Iron Garnets | * |
dc.type | Article | * |
dc.relation.issue | 29 | * |
dc.relation.volume | 7 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 25078 | * |
dc.relation.lastpage | 25086 | * |
dc.relation.journaltitle | ACS OMEGA | * |
dc.identifier.doi | 10.1021/acsomega.2c01334 | * |
dc.identifier.wosid | WOS:000830489300001 | * |
dc.author.google | Cho, Yujin | * |
dc.author.google | Kang, Seohui | * |
dc.author.google | Nahm, Yeon Woo | * |
dc.author.google | Mohamed, Ahmed Yousef | * |
dc.author.google | Kim, Yejin | * |
dc.author.google | Cho, Deok-Yong | * |
dc.author.google | Cho, Suyeon | * |
dc.contributor.scopusid | 조수연(55772631700) | * |
dc.date.modifydate | 20240322131012 | * |