Co/Cu（001）超薄膜磁光谱的原位观测

IEEE Translation Journal on Magnetics in Japan Pub Date : 1994-11-01 DOI:10.1109/TJMJ.1994.4565976

K. Nakajima;T. Miyazaki

{"title":"Co/Cu（001）超薄膜磁光谱的原位观测","authors":"K. Nakajima;T. Miyazaki","doi":"10.1109/TJMJ.1994.4565976","DOIUrl":null,"url":null,"abstract":"The magneto-optical properties of ultrathin fcc Co films epitaxially grown on Cu (001) surfaces were investigated. The growth conditions were optimized, and the RHEED patterns of Co ultrathin films revealed streaks reflecting the symmetry of the fcc Cu (001) surface. Longitudinal Kerr hysteresis loops were square for Co coverage thicknesses greater than 6Å, and were detected down to 4Å. The longitudinal Kerr rotation and ellipticity spectra were measured over the photon energy range from 2.0 to 4.6 eV, after Co coverage deposition of each sample. The off-diagonal elements of the conductivity tensor (ωσ\nxy\n) were evaluated. When the Co coverage thickness is 50Å, the shapes of both the ωσ'\nxy\n and ωσ\"\n<inf>xy</inf>\n spectra showed essentially the same features as those of 1000Å thick fcc Co films. When the Co thickness decreased below 50Å, ωσ\"\nxy\n became smaller in magnitude. The decrease in ωσ\"\nxy\n as a fraction of a number of Co/Cu layers is discussed.","PeriodicalId":100647,"journal":{"name":"IEEE Translation Journal on Magnetics in Japan","volume":"9 6","pages":"171-176"},"PeriodicalIF":0.0000,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TJMJ.1994.4565976","citationCount":"1","resultStr":"{\"title\":\"In-Situ Observations of Magneto-Optical Spectra for Co/Cu (001) Ultrathin Films\",\"authors\":\"K. Nakajima;T. Miyazaki\",\"doi\":\"10.1109/TJMJ.1994.4565976\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The magneto-optical properties of ultrathin fcc Co films epitaxially grown on Cu (001) surfaces were investigated. The growth conditions were optimized, and the RHEED patterns of Co ultrathin films revealed streaks reflecting the symmetry of the fcc Cu (001) surface. Longitudinal Kerr hysteresis loops were square for Co coverage thicknesses greater than 6Å, and were detected down to 4Å. The longitudinal Kerr rotation and ellipticity spectra were measured over the photon energy range from 2.0 to 4.6 eV, after Co coverage deposition of each sample. The off-diagonal elements of the conductivity tensor (ωσ\\nxy\\n) were evaluated. When the Co coverage thickness is 50Å, the shapes of both the ωσ'\\nxy\\n and ωσ\\\"\\n<inf>xy</inf>\\n spectra showed essentially the same features as those of 1000Å thick fcc Co films. When the Co thickness decreased below 50Å, ωσ\\\"\\nxy\\n became smaller in magnitude. The decrease in ωσ\\\"\\nxy\\n as a fraction of a number of Co/Cu layers is discussed.\",\"PeriodicalId\":100647,\"journal\":{\"name\":\"IEEE Translation Journal on Magnetics in Japan\",\"volume\":\"9 6\",\"pages\":\"171-176\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1994-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1109/TJMJ.1994.4565976\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Translation Journal on Magnetics in Japan\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/4565976/\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Translation Journal on Magnetics in Japan","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/4565976/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

摘要

研究了在Cu（001）表面外延生长的fcc-Co薄膜的磁光特性。对生长条件进行了优化，Co薄膜的RHEED图谱显示出反映fcc-Cu（001）表面对称性的条纹。对于大于6Å的Co覆盖厚度，纵向克尔磁滞回线是正方形的，并且被检测到低至4Å。在每个样品的Co覆盖沉积之后，在2.0至4.6eV的光子能量范围内测量纵向Kerr旋转和椭圆率光谱。对电导率张量（ωσxy）的非对角元素进行了评估。当Co覆盖厚度为50Å时，ωσ'xy和ωσ“xy光谱的形状与1000Å厚的fcc-Co膜的形状基本相同。当Co厚度降至50Å以下时，ω∑”xy的大小变小。讨论了ωσ“xy作为Co/Cu层数量的一部分的减少。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

In-Situ Observations of Magneto-Optical Spectra for Co/Cu (001) Ultrathin Films

The magneto-optical properties of ultrathin fcc Co films epitaxially grown on Cu (001) surfaces were investigated. The growth conditions were optimized, and the RHEED patterns of Co ultrathin films revealed streaks reflecting the symmetry of the fcc Cu (001) surface. Longitudinal Kerr hysteresis loops were square for Co coverage thicknesses greater than 6Å, and were detected down to 4Å. The longitudinal Kerr rotation and ellipticity spectra were measured over the photon energy range from 2.0 to 4.6 eV, after Co coverage deposition of each sample. The off-diagonal elements of the conductivity tensor (ωσ _xy ) were evaluated. When the Co coverage thickness is 50Å, the shapes of both the ωσ' _xy and ωσ" xy spectra showed essentially the same features as those of 1000Å thick fcc Co films. When the Co thickness decreased below 50Å, ωσ" _xy became smaller in magnitude. The decrease in ωσ" _xy as a fraction of a number of Co/Cu layers is discussed.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助