Effect of damping on the laser induced ultrafast switching in rare earth-transition metal alloys
In this paper, we present simulations of thermally induced magnetic switching in ferrimagnetic systems performed with a Landau-Lifshitz-Bloch (LLB) equation for damping constant in a wide range of values. We have systematically studied the GdFeCo ferrimagnet with various concentrations of Gd and com...
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| Veröffentlicht in: | Applied physics letters 2014-06, Vol.104 (22) |
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| creator | Oniciuc, Eugen Stoleriu, Laurentiu Cimpoesu, Dorin Stancu, Alexandru |
| description | In this paper, we present simulations of thermally induced magnetic switching in ferrimagnetic systems performed with a Landau-Lifshitz-Bloch (LLB) equation for damping constant in a wide range of values. We have systematically studied the GdFeCo ferrimagnet with various concentrations of Gd and compared for some values of parameters the LLB results with atomistic simulations. The agreement is remarkably good, which shows that the dynamics described by the ferrimagnetic LLB is a reasonable approximation of this complex physical phenomenon. As an important element, we show that the LLB is able to also describe the intermediate formation of a ferromagnetic state which seems to be essential to understand laser induced ultrafast switching. The study reveals the fundamental role of damping during the switching process. |
| doi_str_mv | 10.1063/1.4881135 |
| format | Article |
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We have systematically studied the GdFeCo ferrimagnet with various concentrations of Gd and compared for some values of parameters the LLB results with atomistic simulations. The agreement is remarkably good, which shows that the dynamics described by the ferrimagnetic LLB is a reasonable approximation of this complex physical phenomenon. As an important element, we show that the LLB is able to also describe the intermediate formation of a ferromagnetic state which seems to be essential to understand laser induced ultrafast switching. 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The study reveals the fundamental role of damping during the switching process.</description><subject>ABUNDANCE</subject><subject>Applied physics</subject><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>DAMPING</subject><subject>EQUATIONS</subject><subject>Ferrimagnetism</subject><subject>Ferromagnetism</subject><subject>Gadolinium</subject><subject>LASER RADIATION</subject><subject>Magnetic switching</subject><subject>RARE EARTH ALLOYS</subject><subject>SIMULATION</subject><subject>TRANSITION ELEMENT ALLOYS</subject><subject>Transition metal alloys</subject><subject>Transition metals</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNpFkEtLAzEUhYMoWKsL_0HAlYupuXnMpEsp9QEFN7qOaR42ZZrUJIP4753SgqvL4X7ncs9B6BbIDEjLHmDGpQRg4gxNgHRdwwDkOZoQQljTzgVcoqtStqMUlLEJ-lx670zFyWOrd_sQv3CKuG4c7nVxGYdoB-MsHvqatdel4vITqtkcwBBx1tlhp3PdNOM-llDDaN-5qnus-z79lmt04XVf3M1pTtHH0_J98dKs3p5fF4-rxlApasO4tZwIufaEr70T0oE03jEgzgvK553t1lRL3rYAntvWdFRoZ0FQyazwhk3R3fFuKjWoYkJ1ZmNSjGM6RSkjBAj_p_Y5fQ-uVLVNQ47jY4oCbYWk85aO1P2RMjmVkp1X-xx2Ov8qIOpQswJ1qpn9AaL2brg</recordid><startdate>20140602</startdate><enddate>20140602</enddate><creator>Oniciuc, Eugen</creator><creator>Stoleriu, Laurentiu</creator><creator>Cimpoesu, Dorin</creator><creator>Stancu, Alexandru</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20140602</creationdate><title>Effect of damping on the laser induced ultrafast switching in rare earth-transition metal alloys</title><author>Oniciuc, Eugen ; Stoleriu, Laurentiu ; Cimpoesu, Dorin ; Stancu, Alexandru</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c285t-34dd4058bf04bfe58e18cfe310ef52497d7b2a846611f4d6c725aed15283d5fc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>ABUNDANCE</topic><topic>Applied physics</topic><topic>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</topic><topic>DAMPING</topic><topic>EQUATIONS</topic><topic>Ferrimagnetism</topic><topic>Ferromagnetism</topic><topic>Gadolinium</topic><topic>LASER RADIATION</topic><topic>Magnetic switching</topic><topic>RARE EARTH ALLOYS</topic><topic>SIMULATION</topic><topic>TRANSITION ELEMENT ALLOYS</topic><topic>Transition metal alloys</topic><topic>Transition metals</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Oniciuc, Eugen</creatorcontrib><creatorcontrib>Stoleriu, Laurentiu</creatorcontrib><creatorcontrib>Cimpoesu, Dorin</creatorcontrib><creatorcontrib>Stancu, Alexandru</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Oniciuc, Eugen</au><au>Stoleriu, Laurentiu</au><au>Cimpoesu, Dorin</au><au>Stancu, Alexandru</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of damping on the laser induced ultrafast switching in rare earth-transition metal alloys</atitle><jtitle>Applied physics letters</jtitle><date>2014-06-02</date><risdate>2014</risdate><volume>104</volume><issue>22</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><abstract>In this paper, we present simulations of thermally induced magnetic switching in ferrimagnetic systems performed with a Landau-Lifshitz-Bloch (LLB) equation for damping constant in a wide range of values. We have systematically studied the GdFeCo ferrimagnet with various concentrations of Gd and compared for some values of parameters the LLB results with atomistic simulations. The agreement is remarkably good, which shows that the dynamics described by the ferrimagnetic LLB is a reasonable approximation of this complex physical phenomenon. As an important element, we show that the LLB is able to also describe the intermediate formation of a ferromagnetic state which seems to be essential to understand laser induced ultrafast switching. The study reveals the fundamental role of damping during the switching process.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4881135</doi></addata></record> |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | ABUNDANCE Applied physics CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY DAMPING EQUATIONS Ferrimagnetism Ferromagnetism Gadolinium LASER RADIATION Magnetic switching RARE EARTH ALLOYS SIMULATION TRANSITION ELEMENT ALLOYS Transition metal alloys Transition metals |
| title | Effect of damping on the laser induced ultrafast switching in rare earth-transition metal alloys |
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