Magnetic, Optical and Phonon Properties of Ion-Doped MgO Nanoparticles. Application for Magnetic Hyperthermia
The influence of size and doping effects on the magnetization , phonon ω and band gap energy Eg of MgO nanoparticles is studied using a microscopic model. The room-temperature ferromagnetism is due to surface or/and doping effects in MgO nanoparticles (NPs). The influence of the spin-phonon interact...
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| Veröffentlicht in: | Materials 2023-03, Vol.16 (6), p.2353 |
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| creator | Apostolova, Iliana Apostolov, Angel Wesselinowa, Julia |
| description | The influence of size and doping effects on the magnetization
, phonon ω and band gap energy Eg of MgO nanoparticles is studied using a microscopic model. The room-temperature ferromagnetism is due to surface or/and doping effects in MgO nanoparticles (NPs). The influence of the spin-phonon interaction is discussed.
increases with decreasing NP size.
and Eg can increase or decrease by different ion doping (Co, Al, La, Fe) due to the different strain that appears. It changes the lattice parameters and the exchange interaction constants. We found that MgO NP with size of 20 nm and Fe- or Co-doping concentration
= 0.1 and
= 0.2, respectively, have a Curie temperature TC = 315 K, i.e., they are appropriate for application in magnetic hyperthermia, they satisfy the conditions for that. The energy of the phonon mode ω = 448 cm-1 increases with decreasing NP size. It increases with increasing Co and Fe, or decreases with Sr ion doping. |
| doi_str_mv | 10.3390/ma16062353 |
| format | Article |
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, phonon ω and band gap energy Eg of MgO nanoparticles is studied using a microscopic model. The room-temperature ferromagnetism is due to surface or/and doping effects in MgO nanoparticles (NPs). The influence of the spin-phonon interaction is discussed.
increases with decreasing NP size.
and Eg can increase or decrease by different ion doping (Co, Al, La, Fe) due to the different strain that appears. It changes the lattice parameters and the exchange interaction constants. We found that MgO NP with size of 20 nm and Fe- or Co-doping concentration
= 0.1 and
= 0.2, respectively, have a Curie temperature TC = 315 K, i.e., they are appropriate for application in magnetic hyperthermia, they satisfy the conditions for that. The energy of the phonon mode ω = 448 cm-1 increases with decreasing NP size. It increases with increasing Co and Fe, or decreases with Sr ion doping.</description><identifier>ISSN: 1996-1944</identifier><identifier>EISSN: 1996-1944</identifier><identifier>DOI: 10.3390/ma16062353</identifier><identifier>PMID: 36984231</identifier><language>eng</language><publisher>Switzerland: MDPI AG</publisher><subject>Cancer therapies ; Cobalt ; Curie temperature ; Doping ; Energy gap ; Ferromagnetism ; Hyperthermia ; Iron ; Lattice parameters ; Magnesium oxide ; Magnetic properties ; Metal oxides ; Nanoparticles ; Optical properties ; Phonons ; Physical properties ; Room temperature ; Spectrum analysis ; Temperature</subject><ispartof>Materials, 2023-03, Vol.16 (6), p.2353</ispartof><rights>COPYRIGHT 2023 MDPI AG</rights><rights>2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2023 by the authors. 2023</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c446t-f668012eb825b5bb31797bbe0f3b54e4621101ba9e7e10064a185310f90ec7a83</citedby><cites>FETCH-LOGICAL-c446t-f668012eb825b5bb31797bbe0f3b54e4621101ba9e7e10064a185310f90ec7a83</cites><orcidid>0000-0002-3537-1237</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC10051844/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC10051844/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,881,27903,27904,53769,53771</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/36984231$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Apostolova, Iliana</creatorcontrib><creatorcontrib>Apostolov, Angel</creatorcontrib><creatorcontrib>Wesselinowa, Julia</creatorcontrib><title>Magnetic, Optical and Phonon Properties of Ion-Doped MgO Nanoparticles. Application for Magnetic Hyperthermia</title><title>Materials</title><addtitle>Materials (Basel)</addtitle><description>The influence of size and doping effects on the magnetization
, phonon ω and band gap energy Eg of MgO nanoparticles is studied using a microscopic model. The room-temperature ferromagnetism is due to surface or/and doping effects in MgO nanoparticles (NPs). The influence of the spin-phonon interaction is discussed.
increases with decreasing NP size.
and Eg can increase or decrease by different ion doping (Co, Al, La, Fe) due to the different strain that appears. It changes the lattice parameters and the exchange interaction constants. We found that MgO NP with size of 20 nm and Fe- or Co-doping concentration
= 0.1 and
= 0.2, respectively, have a Curie temperature TC = 315 K, i.e., they are appropriate for application in magnetic hyperthermia, they satisfy the conditions for that. The energy of the phonon mode ω = 448 cm-1 increases with decreasing NP size. It increases with increasing Co and Fe, or decreases with Sr ion doping.</description><subject>Cancer therapies</subject><subject>Cobalt</subject><subject>Curie temperature</subject><subject>Doping</subject><subject>Energy gap</subject><subject>Ferromagnetism</subject><subject>Hyperthermia</subject><subject>Iron</subject><subject>Lattice parameters</subject><subject>Magnesium oxide</subject><subject>Magnetic properties</subject><subject>Metal oxides</subject><subject>Nanoparticles</subject><subject>Optical properties</subject><subject>Phonons</subject><subject>Physical properties</subject><subject>Room temperature</subject><subject>Spectrum analysis</subject><subject>Temperature</subject><issn>1996-1944</issn><issn>1996-1944</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpdkVFvFCEQx4nR2Kb2xQ9gSHwxpnvCwsLyZC612iat1wd9JsANdzS7sMKeSb-9XK6tVXgYMvP7_2EYhN5SsmBMkU-joYKIlnXsBTqmSomGKs5fPjsfodNS7khdjNG-Va_REROq5y2jx2i8MZsIc3BneDXVYAZs4hrfblNMEd_mNEGeAxScPL5KsflSE2t8s1nh7yamydSiG6As8HKahiqfQ5X5lPGjL76831tsIY_BvEGvvBkKnD7EE_Tz68WP88vmevXt6nx53TjOxdx4IXpCW7B929nOWkalktYC8cx2HLhoKSXUGgUSKCGCG9p3jBKvCDhpenaCPh98p50dYe0gztkMesphNPleJxP0v5UYtnqTfuvq1tGe8-rw4cEhp187KLMeQ3EwDCZC2hXdStV2hNdvrOj7_9C7tMux9renqJCMClWpxYHamAF0iD7Vi13daxiDSxF8qPml5EwKIZWogo8HgcuplAz-6fmU6P3o9d_RV_jd84af0MdBsz8XVqhs</recordid><startdate>20230315</startdate><enddate>20230315</enddate><creator>Apostolova, Iliana</creator><creator>Apostolov, Angel</creator><creator>Wesselinowa, Julia</creator><general>MDPI AG</general><general>MDPI</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0002-3537-1237</orcidid></search><sort><creationdate>20230315</creationdate><title>Magnetic, Optical and Phonon Properties of Ion-Doped MgO Nanoparticles. 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, phonon ω and band gap energy Eg of MgO nanoparticles is studied using a microscopic model. The room-temperature ferromagnetism is due to surface or/and doping effects in MgO nanoparticles (NPs). The influence of the spin-phonon interaction is discussed.
increases with decreasing NP size.
and Eg can increase or decrease by different ion doping (Co, Al, La, Fe) due to the different strain that appears. It changes the lattice parameters and the exchange interaction constants. We found that MgO NP with size of 20 nm and Fe- or Co-doping concentration
= 0.1 and
= 0.2, respectively, have a Curie temperature TC = 315 K, i.e., they are appropriate for application in magnetic hyperthermia, they satisfy the conditions for that. The energy of the phonon mode ω = 448 cm-1 increases with decreasing NP size. It increases with increasing Co and Fe, or decreases with Sr ion doping.</abstract><cop>Switzerland</cop><pub>MDPI AG</pub><pmid>36984231</pmid><doi>10.3390/ma16062353</doi><orcidid>https://orcid.org/0000-0002-3537-1237</orcidid><oa>free_for_read</oa></addata></record> |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central Open Access; MDPI - Multidisciplinary Digital Publishing Institute; PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Cancer therapies Cobalt Curie temperature Doping Energy gap Ferromagnetism Hyperthermia Iron Lattice parameters Magnesium oxide Magnetic properties Metal oxides Nanoparticles Optical properties Phonons Physical properties Room temperature Spectrum analysis Temperature |
| title | Magnetic, Optical and Phonon Properties of Ion-Doped MgO Nanoparticles. Application for Magnetic Hyperthermia |
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