Magnetic Resonance in Metal–Insulator Nanogranular Composites with Paramagnetic Ions in an Insulating Matrix
The room-temperature magnetic resonance spectra of metal–insulator (CoFeB) x (LiNbO 3 ) 100 – x and (CoFeB) x (Al 2 O 3 ) 100 – x nanogranular composite films with various ferromagnetic metallic phase contents x near the percolation threshold are investigated. The systems under study are charact...
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| Veröffentlicht in: | Journal of experimental and theoretical physics 2022-06, Vol.134 (6), p.725-735 |
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| creator | Drovosekov, A. B. Kreines, N. M. Kovalev, O. A. Sitnikov, A. V. Nikolaev, S. N. Rylkov, V. V. |
| description | The room-temperature magnetic resonance spectra of metal–insulator (CoFeB)
x
(LiNbO
3
)
100 –
x
and (CoFeB)
x
(Al
2
O
3
)
100 –
x
nanogranular composite films with various ferromagnetic metallic phase contents
x
near the percolation threshold are investigated. The systems under study are characterized by a high concentration of paramagnetic ions dispersed in an insulator matrix between ferromagnetic granules. In addition to a usual ferromagnetic resonance signal, these films are found to exhibit an additional absorption peak in weak fields. In contrast to the usual ferromagnetic resonance excited by a transverse high-frequency magnetic field, the additional peak demonstrates a weak dependence of its amplitude on the resonance excitation geometry. The position of this peak depends on the composition of the system, the resonance excitation frequency (
f
= 7–38 GHz), and the magnetic field orientation with respect to the film plane. This behavior is associated with the paramagnetic resonance of Fe
3+
ions, which are present in the insulator matrix and interact with ferromagnetic granules. |
| doi_str_mv | 10.1134/S1063776122060024 |
| format | Article |
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x
(LiNbO
3
)
100 –
x
and (CoFeB)
x
(Al
2
O
3
)
100 –
x
nanogranular composite films with various ferromagnetic metallic phase contents
x
near the percolation threshold are investigated. The systems under study are characterized by a high concentration of paramagnetic ions dispersed in an insulator matrix between ferromagnetic granules. In addition to a usual ferromagnetic resonance signal, these films are found to exhibit an additional absorption peak in weak fields. In contrast to the usual ferromagnetic resonance excited by a transverse high-frequency magnetic field, the additional peak demonstrates a weak dependence of its amplitude on the resonance excitation geometry. The position of this peak depends on the composition of the system, the resonance excitation frequency (
f
= 7–38 GHz), and the magnetic field orientation with respect to the film plane. This behavior is associated with the paramagnetic resonance of Fe
3+
ions, which are present in the insulator matrix and interact with ferromagnetic granules.</description><identifier>ISSN: 1063-7761</identifier><identifier>EISSN: 1090-6509</identifier><identifier>DOI: 10.1134/S1063776122060024</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Aluminum oxide ; Classical and Quantum Gravitation ; Disorder ; Elementary Particles ; Excitation ; Ferromagnetic materials ; Ferromagnetic resonance ; Ferromagnetism ; Granular materials ; Lithium niobates ; Magnetic fields ; Magnetism ; Order ; Paramagnetic resonance ; Particle and Nuclear Physics ; Percolation ; Phase Transition in Condensed System ; Physics ; Physics and Astronomy ; Quantum Field Theory ; Relativity Theory ; Room temperature ; Solid State Physics</subject><ispartof>Journal of experimental and theoretical physics, 2022-06, Vol.134 (6), p.725-735</ispartof><rights>Pleiades Publishing, Inc. 2022. ISSN 1063-7761, Journal of Experimental and Theoretical Physics, 2022, Vol. 134, No. 6, pp. 725–735. © Pleiades Publishing, Inc., 2022. Russian Text © The Author(s), 2022, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2022, Vol. 161, No. 6, pp. 853–865.</rights><rights>COPYRIGHT 2022 Springer</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c389t-b30ec83305d8fdf6989b8c6b96017a559ba8ab22769b1d56e0af04816ffd02513</citedby><cites>FETCH-LOGICAL-c389t-b30ec83305d8fdf6989b8c6b96017a559ba8ab22769b1d56e0af04816ffd02513</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S1063776122060024$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S1063776122060024$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Drovosekov, A. B.</creatorcontrib><creatorcontrib>Kreines, N. M.</creatorcontrib><creatorcontrib>Kovalev, O. A.</creatorcontrib><creatorcontrib>Sitnikov, A. V.</creatorcontrib><creatorcontrib>Nikolaev, S. N.</creatorcontrib><creatorcontrib>Rylkov, V. V.</creatorcontrib><title>Magnetic Resonance in Metal–Insulator Nanogranular Composites with Paramagnetic Ions in an Insulating Matrix</title><title>Journal of experimental and theoretical physics</title><addtitle>J. Exp. Theor. Phys</addtitle><description>The room-temperature magnetic resonance spectra of metal–insulator (CoFeB)
x
(LiNbO
3
)
100 –
x
and (CoFeB)
x
(Al
2
O
3
)
100 –
x
nanogranular composite films with various ferromagnetic metallic phase contents
x
near the percolation threshold are investigated. The systems under study are characterized by a high concentration of paramagnetic ions dispersed in an insulator matrix between ferromagnetic granules. In addition to a usual ferromagnetic resonance signal, these films are found to exhibit an additional absorption peak in weak fields. In contrast to the usual ferromagnetic resonance excited by a transverse high-frequency magnetic field, the additional peak demonstrates a weak dependence of its amplitude on the resonance excitation geometry. The position of this peak depends on the composition of the system, the resonance excitation frequency (
f
= 7–38 GHz), and the magnetic field orientation with respect to the film plane. This behavior is associated with the paramagnetic resonance of Fe
3+
ions, which are present in the insulator matrix and interact with ferromagnetic granules.</description><subject>Aluminum oxide</subject><subject>Classical and Quantum Gravitation</subject><subject>Disorder</subject><subject>Elementary Particles</subject><subject>Excitation</subject><subject>Ferromagnetic materials</subject><subject>Ferromagnetic resonance</subject><subject>Ferromagnetism</subject><subject>Granular materials</subject><subject>Lithium niobates</subject><subject>Magnetic fields</subject><subject>Magnetism</subject><subject>Order</subject><subject>Paramagnetic resonance</subject><subject>Particle and Nuclear Physics</subject><subject>Percolation</subject><subject>Phase Transition in Condensed System</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Quantum Field Theory</subject><subject>Relativity Theory</subject><subject>Room temperature</subject><subject>Solid State Physics</subject><issn>1063-7761</issn><issn>1090-6509</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp1kctOAyEUhidGE68P4I7ElYvRA3SYYWkaL02sGi_ryZkZGDEtVKCx7nwH39AnkaYaY4xhAQe-74dwsmyfwhGlfHB8R0HwshSUMRAAbLCWbVGQkIsC5PpyLXi-PN_MtkN4AoCKgdzK7Bh7q6Jpya0KzqJtFTGWjFXEycfb-8iG-QSj8-QKres92lR6MnTTmQsmqkBeTHwkN-hx-h00cjYsM9CSL93YnowxerPYzTY0ToLa-5p3soez0_vhRX55fT4anlzmLa9kzBsOqq04h6KrdKeFrGRTtaKRAmiJRSEbrLBhrBSyoV0hFKCGQUWF1h2wgvKd7GCVO_Puea5CrJ_c3Nt0Zc2EZJQXciASdbSiepyo2ljtosc2jU5NTeus0ibtn5TpIyUroUzC4S8hMVEtYo_zEOrR3e1vlq7Y1rsQvNL1zJsp-teaQr3sWf2nZ8lhKyck1vbK_zz7f-kT-4uYsg</recordid><startdate>20220601</startdate><enddate>20220601</enddate><creator>Drovosekov, A. B.</creator><creator>Kreines, N. M.</creator><creator>Kovalev, O. A.</creator><creator>Sitnikov, A. V.</creator><creator>Nikolaev, S. N.</creator><creator>Rylkov, V. V.</creator><general>Pleiades Publishing</general><general>Springer</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>ISR</scope></search><sort><creationdate>20220601</creationdate><title>Magnetic Resonance in Metal–Insulator Nanogranular Composites with Paramagnetic Ions in an Insulating Matrix</title><author>Drovosekov, A. B. ; Kreines, N. M. ; Kovalev, O. A. ; Sitnikov, A. V. ; Nikolaev, S. N. ; Rylkov, V. V.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c389t-b30ec83305d8fdf6989b8c6b96017a559ba8ab22769b1d56e0af04816ffd02513</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Aluminum oxide</topic><topic>Classical and Quantum Gravitation</topic><topic>Disorder</topic><topic>Elementary Particles</topic><topic>Excitation</topic><topic>Ferromagnetic materials</topic><topic>Ferromagnetic resonance</topic><topic>Ferromagnetism</topic><topic>Granular materials</topic><topic>Lithium niobates</topic><topic>Magnetic fields</topic><topic>Magnetism</topic><topic>Order</topic><topic>Paramagnetic resonance</topic><topic>Particle and Nuclear Physics</topic><topic>Percolation</topic><topic>Phase Transition in Condensed System</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Quantum Field Theory</topic><topic>Relativity Theory</topic><topic>Room temperature</topic><topic>Solid State Physics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Drovosekov, A. B.</creatorcontrib><creatorcontrib>Kreines, N. M.</creatorcontrib><creatorcontrib>Kovalev, O. A.</creatorcontrib><creatorcontrib>Sitnikov, A. V.</creatorcontrib><creatorcontrib>Nikolaev, S. N.</creatorcontrib><creatorcontrib>Rylkov, V. V.</creatorcontrib><collection>CrossRef</collection><collection>Gale In Context: Science</collection><jtitle>Journal of experimental and theoretical physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Drovosekov, A. B.</au><au>Kreines, N. M.</au><au>Kovalev, O. A.</au><au>Sitnikov, A. V.</au><au>Nikolaev, S. N.</au><au>Rylkov, V. V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Magnetic Resonance in Metal–Insulator Nanogranular Composites with Paramagnetic Ions in an Insulating Matrix</atitle><jtitle>Journal of experimental and theoretical physics</jtitle><stitle>J. Exp. Theor. Phys</stitle><date>2022-06-01</date><risdate>2022</risdate><volume>134</volume><issue>6</issue><spage>725</spage><epage>735</epage><pages>725-735</pages><issn>1063-7761</issn><eissn>1090-6509</eissn><abstract>The room-temperature magnetic resonance spectra of metal–insulator (CoFeB)
x
(LiNbO
3
)
100 –
x
and (CoFeB)
x
(Al
2
O
3
)
100 –
x
nanogranular composite films with various ferromagnetic metallic phase contents
x
near the percolation threshold are investigated. The systems under study are characterized by a high concentration of paramagnetic ions dispersed in an insulator matrix between ferromagnetic granules. In addition to a usual ferromagnetic resonance signal, these films are found to exhibit an additional absorption peak in weak fields. In contrast to the usual ferromagnetic resonance excited by a transverse high-frequency magnetic field, the additional peak demonstrates a weak dependence of its amplitude on the resonance excitation geometry. The position of this peak depends on the composition of the system, the resonance excitation frequency (
f
= 7–38 GHz), and the magnetic field orientation with respect to the film plane. This behavior is associated with the paramagnetic resonance of Fe
3+
ions, which are present in the insulator matrix and interact with ferromagnetic granules.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S1063776122060024</doi><tpages>11</tpages></addata></record> |
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| subjects | Aluminum oxide Classical and Quantum Gravitation Disorder Elementary Particles Excitation Ferromagnetic materials Ferromagnetic resonance Ferromagnetism Granular materials Lithium niobates Magnetic fields Magnetism Order Paramagnetic resonance Particle and Nuclear Physics Percolation Phase Transition in Condensed System Physics Physics and Astronomy Quantum Field Theory Relativity Theory Room temperature Solid State Physics |
| title | Magnetic Resonance in Metal–Insulator Nanogranular Composites with Paramagnetic Ions in an Insulating Matrix |
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