التفاصيل البيبلوغرافية
| العنوان: |
Zn- and (Mn, Zn)-substituted versus unsubstituted magnetite nanoparticles: structural, magnetic and hyperthermic properties. |
| المؤلفون: |
Jović Orsini N; Institute of Nuclear Sciences 'Vinča', Laboratory of Theoretical Physics and Condensed Matter Physics (020), University of Belgrade, PO Box 522, RS-11001 Belgrade, Serbia., Milić MM, Torres TE |
| المصدر: |
Nanotechnology [Nanotechnology] 2020 May 29; Vol. 31 (22), pp. 225707. Date of Electronic Publication: 2020 Feb 17. |
| نوع المنشور: |
Journal Article |
| اللغة: |
English |
| بيانات الدورية: |
Publisher: IOP Pub Country of Publication: England NLM ID: 101241272 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1361-6528 (Electronic) Linking ISSN: 09574484 NLM ISO Abbreviation: Nanotechnology Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: |
Original Publication: Bristol, UK : IOP Pub., c1990- |
| مستخلص: |
In this work, we studied structural and magnetic properties of 18 nm sized Zn-substituted magnetite, 28 nm sized unsubstituted and 17 nm sized (Mn, Zn)-substituted iron oxide nanoparticles, synthesized by thermal decomposition method. Their features were examined by analyzing the x-ray diffraction data, 57 Fe Mössbauer spectra and magnetization measurements by SQUID interferometer. The microstructure was inspected comparing the different size and strain broadening models incorporated into Fullprof software. In terms of crystallinity and size dispersion, applied synthesis protocol shows superiority over decomposition of iron oleate and the co-precipitation synthesis route. The saturation magnetization at T = 5 K was found to be within the M S = 91.2-98.6 A m 2 kg -1 range, while at 300 K M S of pure and Zn-substituted Fe 3 O 4 nanoparticles is 83.6 and 86.2 A m 2 kg -1 , respectively. Effective magnetic anisotropy constant K eff , estimated under slow measurements by SQUID, is below 20 kJ m -3 in all three samples. Some preliminary measurements of the magnetic hyperthermia performance, expressed via specific absorption rate value showed that the best heating performances were displayed by 18 nm sized oleic acid-coated Zn 0.13 Fe 2.87 O 4 cubo-octahedrons with SAR ≅ 425 W/g Fe at H 0 = 20 kA m -1 and f = 228 kHz. |
| تواريخ الأحداث: |
Date Created: 20200218 Latest Revision: 20200319 |
| رمز التحديث: |
20221213 |
| DOI: |
10.1088/1361-6528/ab76e7 |
| PMID: |
32066121 |
| قاعدة البيانات: |
MEDLINE |
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