M.S. Pessoa , M.A. Sousa , P.S. Moscon , J.R.C. Proveti , L.C. Merino , P.C. Morais , F. Pelegrini , M. Parise , L.C. Figueiredo , E. Baggio-Saitovitch
{"title":"利用方镁石纳米粒子揭示多频铁磁共振的不饱和模式","authors":"M.S. Pessoa , M.A. Sousa , P.S. Moscon , J.R.C. Proveti , L.C. Merino , P.C. Morais , F. Pelegrini , M. Parise , L.C. Figueiredo , E. Baggio-Saitovitch","doi":"10.1016/j.physb.2024.416736","DOIUrl":null,"url":null,"abstract":"<div><div>This study reports on the use of ferromagnetic resonance (FMR), at various microwave frequencies (1.1 GHz, 3.5 GHz, 9.4 GHz, and 33.9 GHz), to investigate nanosized maghemite-based (γ-Fe<sub>2</sub>O<sub>3</sub>) samples in both powder (P) and aqueous-based magnetic fluid (MF) presentations. The structure of the as-synthesized sample was confirmed through x-ray diffraction (XRD), revealing the maghemite phase with average diameter of about 12 nm. Analyses of the room temperature (RT) FMR spectra suggest that the samples are in a non-saturated state for microwave frequencies below about 10 GHz (X-band). Comparisons between theoretical modelling (acceptable) parameters and those obtained through fittings of the experimental data revealed significant discrepancies, highlighting an increase in divergence as the measurement condition deviates from the magnetic saturation condition, taking place at microwave frequencies below about 10 GHz.</div></div>","PeriodicalId":20116,"journal":{"name":"Physica B-condensed Matter","volume":"697 ","pages":"Article 416736"},"PeriodicalIF":2.8000,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Unveiling unsaturated modes from multi-frequency ferromagnetic resonance using maghemite nanoparticles\",\"authors\":\"M.S. Pessoa , M.A. Sousa , P.S. Moscon , J.R.C. Proveti , L.C. Merino , P.C. Morais , F. Pelegrini , M. Parise , L.C. Figueiredo , E. Baggio-Saitovitch\",\"doi\":\"10.1016/j.physb.2024.416736\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study reports on the use of ferromagnetic resonance (FMR), at various microwave frequencies (1.1 GHz, 3.5 GHz, 9.4 GHz, and 33.9 GHz), to investigate nanosized maghemite-based (γ-Fe<sub>2</sub>O<sub>3</sub>) samples in both powder (P) and aqueous-based magnetic fluid (MF) presentations. The structure of the as-synthesized sample was confirmed through x-ray diffraction (XRD), revealing the maghemite phase with average diameter of about 12 nm. Analyses of the room temperature (RT) FMR spectra suggest that the samples are in a non-saturated state for microwave frequencies below about 10 GHz (X-band). Comparisons between theoretical modelling (acceptable) parameters and those obtained through fittings of the experimental data revealed significant discrepancies, highlighting an increase in divergence as the measurement condition deviates from the magnetic saturation condition, taking place at microwave frequencies below about 10 GHz.</div></div>\",\"PeriodicalId\":20116,\"journal\":{\"name\":\"Physica B-condensed Matter\",\"volume\":\"697 \",\"pages\":\"Article 416736\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2024-11-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physica B-condensed Matter\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0921452624010779\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, CONDENSED MATTER\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physica B-condensed Matter","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921452624010779","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
Unveiling unsaturated modes from multi-frequency ferromagnetic resonance using maghemite nanoparticles
This study reports on the use of ferromagnetic resonance (FMR), at various microwave frequencies (1.1 GHz, 3.5 GHz, 9.4 GHz, and 33.9 GHz), to investigate nanosized maghemite-based (γ-Fe2O3) samples in both powder (P) and aqueous-based magnetic fluid (MF) presentations. The structure of the as-synthesized sample was confirmed through x-ray diffraction (XRD), revealing the maghemite phase with average diameter of about 12 nm. Analyses of the room temperature (RT) FMR spectra suggest that the samples are in a non-saturated state for microwave frequencies below about 10 GHz (X-band). Comparisons between theoretical modelling (acceptable) parameters and those obtained through fittings of the experimental data revealed significant discrepancies, highlighting an increase in divergence as the measurement condition deviates from the magnetic saturation condition, taking place at microwave frequencies below about 10 GHz.
期刊介绍:
Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work.
Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas:
-Magnetism
-Materials physics
-Nanostructures and nanomaterials
-Optics and optical materials
-Quantum materials
-Semiconductors
-Strongly correlated systems
-Superconductivity
-Surfaces and interfaces