Zobrazeno 1 - 10
of 17 905
pro vyhledávání: '"superparamagnetism"'
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 5987-6010 (2024)
Seven cubic spinel ferrite nanoparticles were successfully synthesized through the co-precipitation method. These nanoparticles include Fe3O4, Zn0.4Fe0.62+Fe23+O4, Mn0.4Fe0.62+Fe23+O4, Zn0.6Mn0.4Fe0.42+Fe1.63+O4, Zn0.4Mn0.6Fe0.42+Fe1.63+O4, Zn0.4Mn0.
Externí odkaz:
https://doaj.org/article/1f4e463d37d44e499a388d64415c8f14
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-10 (2024)
Abstract Acoustic metamaterials are growing in popularity for sound applications including noise control. Despite this, there remain significant challenges associated with the fabrication of these materials for the sub-100 Hz regime, because acoustic
Externí odkaz:
https://doaj.org/article/e222795366b74ea38b7d871fce453843
Publikováno v:
Frontiers in Environmental Chemistry, Vol 5 (2024)
Magnetised zeolite A, zeolite X and Na,K-CHA composites with superparamagnetic nanoparticles of SiO2-coated Fe3O4 or CoFe2O4 ferrite spinels were prepared, characterised and tested for ion exchange efficacy. They were synthesised by following three s
Externí odkaz:
https://doaj.org/article/c80a3d371fc3435d93f2902aae349ddf
Publikováno v:
Progress in Physics of Applied Materials, Vol 3, Iss 1, Pp 83-103 (2023)
In this work, an eco-friendly “green” nanocomposite of chitosan containing graphite and maghemite (g-Fe2O3) nanoparticles were prepared by solution casting method. The effect of g-Fe2O3 nanoparticles on structural, electric and dielectric propert
Externí odkaz:
https://doaj.org/article/d104bed9bf27496980050d555946a2e3
Autor:
Cristian E. Botez, Alex D. Price
Publikováno v:
Crystals, Vol 14, Iss 7, p 580 (2024)
We used magnetic and synchrotron X-ray diffraction measurements to investigate the possibility of tuning the strength of magnetic interparticle interactions in nanoparticle ensembles via chemical manipulation. Our main result comes from temperature-r
Externí odkaz:
https://doaj.org/article/6e381319c5b84729acb79997ec17f93c
Publikováno v:
Nanomanufacturing, Vol 3, Iss 3, Pp 263-280 (2023)
The strong ferromagnetic nanoparticles are analyzed within the band structure-based shell model, accounting for discrete quantum levels of conducting electrons. As is demonstrated, such an approach allows for the description of the observed superpara
Externí odkaz:
https://doaj.org/article/7057944bc469447a8288610b6046929d
Autor:
Sándor Stichleutner, Bence Herczeg, Jiří Pechoušek, Libor Machala, Zoltán Homonnay, David Smrčka, Lukáš Kouřil, René Vondrášek, Mátyás Kudor, Vladimir A. Skuratov, Luboš Krupa, Shiro Kubuki, Ernő Kuzmann
Publikováno v:
Metals, Vol 14, Iss 4, p 421 (2024)
The effect of swift heavy ion irradiation on sol–gel-prepared maghemite nanoparticles was studied by 57Fe transmission Mössbauer spectroscopy and X-ray diffractometry (XRD). The room temperature Mössbauer spectra of the non-irradiated nano-maghem
Externí odkaz:
https://doaj.org/article/391f0618244e48f78f9caeca5eaacd08
Autor:
Vital Cruvinel Ferreira-Filho, Beatriz Morais, Bruno J. C. Vieira, João Carlos Waerenborgh, Maria João Carmezim, Csilla Noémi Tóth, Sandra Même, Sara Lacerda, Daniel Jaque, Célia T. Sousa, Maria Paula Cabral Campello, Laura C. J. Pereira
Publikováno v:
Molecules, Vol 29, Iss 8, p 1824 (2024)
This study aimed to develop multifunctional nanoplatforms for both cancer imaging and therapy using superparamagnetic iron oxide nanoparticles (SPIONs). Two distinct synthetic methods, reduction–precipitation (MR/P) and co-precipitation at controll
Externí odkaz:
https://doaj.org/article/9be55198b4294bde885947767c55957f
Autor:
Igor S. Poperechny, Yuriy L. Raikher
Publikováno v:
Magnetism, Vol 2, Iss 4, Pp 340-355 (2022)
As is known, the multi-sublattice structure of antiferromagnets (AFMs) entails that, under size diminution to the nanoscale, compensation of the sublattice magnetizations becomes incomplete. Due to that, the nanoparticles acquire small, but finite pe
Externí odkaz:
https://doaj.org/article/f5705330d4a548bba0008655051b25e5
Autor:
P. Priyadharshini, K. Pushpanathan
Publikováno v:
Chemical Physics Impact, Vol 6, Iss , Pp 100201- (2023)
The impact of Ce3+ doping on the crystallite size, microstructure, optical, and magnetic characteristics of nickel ferrite magnetic nanoparticles prepared by co-precipitation method is discussed in this article. The x-ray diffractometer, ultraviolet
Externí odkaz:
https://doaj.org/article/0db20f87fe594860ad37bfbe60372fed