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Revealing a masked Verwey transition in nanoparticles of coexisting Fe-oxide phases

Abstract: The attractive electronic and magnetic properties together with their biocompatibility make iron-oxide nanoparticles appear as functional materials. In Fe-oxide nanoparticle (IONP) ensembles, it is crucial to enhance their performance thanks to controlled size, shape, and stoichiometry ensembles. In light of this, we conduct a comprehensive investigation in an ensemble of ca. 28 nm cuboid-shaped IONPs in which all the analyses concur with the coexistence of magnetite/maghemite phases in their cores. Here, we are disclosing the Verwey transition by temperature dependent (4?210 K) Raman spectroscopy.

 Fuente: RSC Advances, 2021, 11, 390

 Editorial: Royal Society of Chemistry

 Año de publicación: 2021

 Nº de páginas: 7

 Tipo de publicación: Artículo de Revista

 DOI: 10.1039/d0ra09226f

 ISSN: 2046-2069

 Proyecto español: MAT2017-83631-C3-3-R

 Proyecto europeo: info:eu-repo/grantAgreement/EC/FP7/604448/EU/Nanometrology Standardization Methods for Magnetic Nanoparticles/NanoMag/

 Url de la publicación: https://doi.org/10.1039/D0RA09226F

Autoría

JESUS ANTONIO GONZALEZ GOMEZ

GAVILAN, HELENA

FOCK, JEPPE

ZENG, LUNJIE

WITTE, KERSTIN

BENDER, PHILIPP

JOHANSSON, CHRISTER