A. B. Rinkevich, E. A. Kuznetsov, D. V. Perov, M. A. Milyaev, L. I. Naumova, M. V. Makarova
{"title":"微波频率下的 CoFe/Cu/CoFe/FeMn 自旋阀和 CoFe/Cu/CoFe 三层纳米结构","authors":"A. B. Rinkevich, E. A. Kuznetsov, D. V. Perov, M. A. Milyaev, L. I. Naumova, M. V. Makarova","doi":"10.1134/S1063784224030332","DOIUrl":null,"url":null,"abstract":"<p>The microwave magnetoresistance of CoFe/Cu/CoFe/FeMn spin valves and CoFe/Cu/CoFe three-layer nanostructures with high magnetoresistance has been studied. The transmission and reflection coefficients were measured at the frequency range from 26 to 38 GHz in magnetic fields up to 12 kOe. It is shown that the dependences of the transmission coefficient of spin valves are not symmetric with respect to the <i>H</i> = 0 axis, as well as the dependences of magnetoresistance. It is established that the relative changes in the microwave transmission coefficient are 1.5–2 times higher than the relative magnetoresistance measured at direct current. Changes in the reflection coefficient have a smaller value and the opposite sign with respect to changes in the transmission coefficient.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"CoFe/Cu/CoFe/FeMn Spin Valves and CoFe/Cu/CoFe Three-Layer Nanostructures at Microwave Frequencies\",\"authors\":\"A. B. Rinkevich, E. A. Kuznetsov, D. V. Perov, M. A. Milyaev, L. I. Naumova, M. V. Makarova\",\"doi\":\"10.1134/S1063784224030332\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The microwave magnetoresistance of CoFe/Cu/CoFe/FeMn spin valves and CoFe/Cu/CoFe three-layer nanostructures with high magnetoresistance has been studied. The transmission and reflection coefficients were measured at the frequency range from 26 to 38 GHz in magnetic fields up to 12 kOe. It is shown that the dependences of the transmission coefficient of spin valves are not symmetric with respect to the <i>H</i> = 0 axis, as well as the dependences of magnetoresistance. It is established that the relative changes in the microwave transmission coefficient are 1.5–2 times higher than the relative magnetoresistance measured at direct current. Changes in the reflection coefficient have a smaller value and the opposite sign with respect to changes in the transmission coefficient.</p>\",\"PeriodicalId\":783,\"journal\":{\"name\":\"Technical Physics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2024-09-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Technical Physics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1063784224030332\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PHYSICS, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Technical Physics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063784224030332","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
摘要
摘要 研究了 CoFe/Cu/CoFe/FeMn 自旋阀和 CoFe/Cu/CoFe 三层高磁阻纳米结构的微波磁阻。在高达 12 kOe 的磁场中，测量了 26 至 38 GHz 频率范围内的透射和反射系数。结果表明，自旋阀的透射系数与磁阻的关系以及 H = 0 轴的关系并不对称。研究证实，微波传输系数的相对变化是直流测量的相对磁阻的 1.5-2 倍。反射系数的变化值较小，且与透射系数的变化符号相反。
CoFe/Cu/CoFe/FeMn Spin Valves and CoFe/Cu/CoFe Three-Layer Nanostructures at Microwave Frequencies
The microwave magnetoresistance of CoFe/Cu/CoFe/FeMn spin valves and CoFe/Cu/CoFe three-layer nanostructures with high magnetoresistance has been studied. The transmission and reflection coefficients were measured at the frequency range from 26 to 38 GHz in magnetic fields up to 12 kOe. It is shown that the dependences of the transmission coefficient of spin valves are not symmetric with respect to the H = 0 axis, as well as the dependences of magnetoresistance. It is established that the relative changes in the microwave transmission coefficient are 1.5–2 times higher than the relative magnetoresistance measured at direct current. Changes in the reflection coefficient have a smaller value and the opposite sign with respect to changes in the transmission coefficient.
期刊介绍：
Technical Physics is a journal that contains practical information on all aspects of applied physics, especially instrumentation and measurement techniques. Particular emphasis is put on plasma physics and related fields such as studies of charged particles in electromagnetic fields, synchrotron radiation, electron and ion beams, gas lasers and discharges. Other journal topics are the properties of condensed matter, including semiconductors, superconductors, gases, liquids, and different materials.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
