A broadband ferromagnetic resonance dipper probe for magnetic damping measurements from 4.2 K to 300 K
A dipper probe for broadband Ferromagnetic Resonance (FMR) operating from 4.2 K to room temperature is described. The apparatus is based on a 2-port transmitted microwave signal measurement with a grounded coplanar waveguide. The waveguide generates a microwave field and records the sample response....
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| Veröffentlicht in: | Review of scientific instruments 2016-04, Vol.87 (4), p.043110-043110 |
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| container_title | Review of scientific instruments |
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| creator | He, Shikun Panagopoulos, Christos |
| description | A dipper probe for broadband Ferromagnetic Resonance (FMR) operating from 4.2 K to room temperature is described. The apparatus is based on a 2-port transmitted microwave signal measurement with a grounded coplanar waveguide. The waveguide generates a microwave field and records the sample response. A 3-stage dipper design is adopted for fast and stable temperature control. The temperature variation due to FMR is in the milli-Kelvin range at liquid helium temperature. We also designed a novel FMR probe head with a spring-loaded sample holder. Improved signal-to-noise ratio and stability compared to a common FMR head are achieved. Using a superconducting vector magnet we demonstrate Gilbert damping measurements on two thin film samples using a vector network analyzer with frequency up to 26 GHz: (1) A Permalloy film of 5 nm thickness and (2) a CoFeB film of 1.5 nm thickness. Experiments were performed with the applied magnetic field parallel and perpendicular to the film plane. |
| doi_str_mv | 10.1063/1.4946789 |
| format | Article |
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The apparatus is based on a 2-port transmitted microwave signal measurement with a grounded coplanar waveguide. The waveguide generates a microwave field and records the sample response. A 3-stage dipper design is adopted for fast and stable temperature control. The temperature variation due to FMR is in the milli-Kelvin range at liquid helium temperature. We also designed a novel FMR probe head with a spring-loaded sample holder. Improved signal-to-noise ratio and stability compared to a common FMR head are achieved. Using a superconducting vector magnet we demonstrate Gilbert damping measurements on two thin film samples using a vector network analyzer with frequency up to 26 GHz: (1) A Permalloy film of 5 nm thickness and (2) a CoFeB film of 1.5 nm thickness. Experiments were performed with the applied magnetic field parallel and perpendicular to the film plane.</description><identifier>ISSN: 0034-6748</identifier><identifier>EISSN: 1089-7623</identifier><identifier>DOI: 10.1063/1.4946789</identifier><identifier>PMID: 27131657</identifier><identifier>CODEN: RSINAK</identifier><language>eng</language><publisher>United States: American Institute of Physics</publisher><subject>Broadband ; Coplanar waveguides ; Dipping ; Ferromagnetic resonance ; Ferromagnetism ; Ferrous alloys ; Helium ; Liquid helium ; Magnetic alloys ; Magnetic damping ; Network analysers ; Sample holders ; Signal measurement ; Temperature ; Temperature control ; Thickness ; Thin films</subject><ispartof>Review of scientific instruments, 2016-04, Vol.87 (4), p.043110-043110</ispartof><rights>Author(s)</rights><rights>2016 Author(s). Published by AIP Publishing.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c449t-647cdd3a4ca018a31e08b6188fda7df8f1fe40ef9e8e8b32d16cf8eca828a6f3</citedby><cites>FETCH-LOGICAL-c449t-647cdd3a4ca018a31e08b6188fda7df8f1fe40ef9e8e8b32d16cf8eca828a6f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/rsi/article-lookup/doi/10.1063/1.4946789$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,780,784,794,4510,27923,27924,76155</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27131657$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>He, Shikun</creatorcontrib><creatorcontrib>Panagopoulos, Christos</creatorcontrib><title>A broadband ferromagnetic resonance dipper probe for magnetic damping measurements from 4.2 K to 300 K</title><title>Review of scientific instruments</title><addtitle>Rev Sci Instrum</addtitle><description>A dipper probe for broadband Ferromagnetic Resonance (FMR) operating from 4.2 K to room temperature is described. The apparatus is based on a 2-port transmitted microwave signal measurement with a grounded coplanar waveguide. The waveguide generates a microwave field and records the sample response. A 3-stage dipper design is adopted for fast and stable temperature control. The temperature variation due to FMR is in the milli-Kelvin range at liquid helium temperature. We also designed a novel FMR probe head with a spring-loaded sample holder. Improved signal-to-noise ratio and stability compared to a common FMR head are achieved. Using a superconducting vector magnet we demonstrate Gilbert damping measurements on two thin film samples using a vector network analyzer with frequency up to 26 GHz: (1) A Permalloy film of 5 nm thickness and (2) a CoFeB film of 1.5 nm thickness. Experiments were performed with the applied magnetic field parallel and perpendicular to the film plane.</description><subject>Broadband</subject><subject>Coplanar waveguides</subject><subject>Dipping</subject><subject>Ferromagnetic resonance</subject><subject>Ferromagnetism</subject><subject>Ferrous alloys</subject><subject>Helium</subject><subject>Liquid helium</subject><subject>Magnetic alloys</subject><subject>Magnetic damping</subject><subject>Network analysers</subject><subject>Sample holders</subject><subject>Signal measurement</subject><subject>Temperature</subject><subject>Temperature control</subject><subject>Thickness</subject><subject>Thin films</subject><issn>0034-6748</issn><issn>1089-7623</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp90EFLHDEUB_BQKnWrPfQLlEAvrTBr3iSbZI4irYqCF-8hk7zIyE4yTWaEfnsju92Chb7Lu_z4v8efkM_A1sAkP4e16IRUuntHVsB01yjZ8vdkxRgXjVRCH5OPpTyxOhuAD-S4VcBBbtSKhAva52R9b6OnAXNOo32MOA-OZiwp2uiQ-mGaMNMppx5pSJkejLfjNMRHOqItS8YR41xoqCFUrFt6S-dEOWP09pQcBbst-Gm_T8jDzx8Pl9fN3f3VzeXFXeOE6OZGCuW851Y4y0BbDsh0L0Hr4K3yQQcIKBiGDjXqnrcepAsandWttjLwE_JtF1tf_bVgmc04FIfbrY2YlmJAablpazRU-vUNfUpLjvU500ILWnG2UVV93ymXUykZg5nyMNr82wAzr90bMPvuq_2yT1z6Ef1B_im7grMdKG6Y7TykeDDPKf9NMpMP_8P_nn4BSFOZ1g</recordid><startdate>201604</startdate><enddate>201604</enddate><creator>He, Shikun</creator><creator>Panagopoulos, Christos</creator><general>American Institute of Physics</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope></search><sort><creationdate>201604</creationdate><title>A broadband ferromagnetic resonance dipper probe for magnetic damping measurements from 4.2 K to 300 K</title><author>He, Shikun ; Panagopoulos, Christos</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c449t-647cdd3a4ca018a31e08b6188fda7df8f1fe40ef9e8e8b32d16cf8eca828a6f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Broadband</topic><topic>Coplanar waveguides</topic><topic>Dipping</topic><topic>Ferromagnetic resonance</topic><topic>Ferromagnetism</topic><topic>Ferrous alloys</topic><topic>Helium</topic><topic>Liquid helium</topic><topic>Magnetic alloys</topic><topic>Magnetic damping</topic><topic>Network analysers</topic><topic>Sample holders</topic><topic>Signal measurement</topic><topic>Temperature</topic><topic>Temperature control</topic><topic>Thickness</topic><topic>Thin films</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>He, Shikun</creatorcontrib><creatorcontrib>Panagopoulos, Christos</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Review of scientific instruments</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>He, Shikun</au><au>Panagopoulos, Christos</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A broadband ferromagnetic resonance dipper probe for magnetic damping measurements from 4.2 K to 300 K</atitle><jtitle>Review of scientific instruments</jtitle><addtitle>Rev Sci Instrum</addtitle><date>2016-04</date><risdate>2016</risdate><volume>87</volume><issue>4</issue><spage>043110</spage><epage>043110</epage><pages>043110-043110</pages><issn>0034-6748</issn><eissn>1089-7623</eissn><coden>RSINAK</coden><abstract>A dipper probe for broadband Ferromagnetic Resonance (FMR) operating from 4.2 K to room temperature is described. The apparatus is based on a 2-port transmitted microwave signal measurement with a grounded coplanar waveguide. The waveguide generates a microwave field and records the sample response. A 3-stage dipper design is adopted for fast and stable temperature control. The temperature variation due to FMR is in the milli-Kelvin range at liquid helium temperature. We also designed a novel FMR probe head with a spring-loaded sample holder. Improved signal-to-noise ratio and stability compared to a common FMR head are achieved. Using a superconducting vector magnet we demonstrate Gilbert damping measurements on two thin film samples using a vector network analyzer with frequency up to 26 GHz: (1) A Permalloy film of 5 nm thickness and (2) a CoFeB film of 1.5 nm thickness. Experiments were performed with the applied magnetic field parallel and perpendicular to the film plane.</abstract><cop>United States</cop><pub>American Institute of Physics</pub><pmid>27131657</pmid><doi>10.1063/1.4946789</doi><tpages>7</tpages></addata></record> |
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| identifier | ISSN: 0034-6748 |
| ispartof | Review of scientific instruments, 2016-04, Vol.87 (4), p.043110-043110 |
| issn | 0034-6748 1089-7623 |
| language | eng |
| recordid | cdi_proquest_journals_2121873057 |
| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Broadband Coplanar waveguides Dipping Ferromagnetic resonance Ferromagnetism Ferrous alloys Helium Liquid helium Magnetic alloys Magnetic damping Network analysers Sample holders Signal measurement Temperature Temperature control Thickness Thin films |
| title | A broadband ferromagnetic resonance dipper probe for magnetic damping measurements from 4.2 K to 300 K |
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