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

David González-Alonso; Jesús González; Helena Gavilán; Jeppe Fock; Lunjie Zeng; Kerstin Witte; Philipp Bender; Luis Fernández Barquín; Christer Johansson

doi:10.1039/d0ra09226f

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

David González-Alonso^*
, Jesús González
, Helena Gavilán
, Jeppe Fock
, Lunjie Zeng
, Kerstin Witte
, Philipp Bender
, Luis Fernández Barquín
, Christer Johansson

^*Corresponding author for this work

Department of Health Technology

Universidad de Cantabria
CSIC - Institute of Materials Science in Madrid
Chalmers University of Technology
University of Rostock
RISE Research Institutes of Sweden

Research output: Contribution to journal › Journal article › Research › peer-review

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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 ofca.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.

Original language	English
Journal	RSC Advances
Volume	11
Issue number	1
Pages (from-to)	390-396
ISSN	2046-2069
DOIs	https://doi.org/10.1039/d0ra09226f
Publication status	Published - 2021

Bibliographical note

Funding Information:
This work was supported by EU FP7 604448 (NanoMag) and MAT2017-83631-C3-R. Dr Norbert Schell is acknowledged for the time at the HEMS beamline, and J. F. thanks MUDP (MST-141-01415).

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title = "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 ofca.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.",

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note = "Funding Information: This work was supported by EU FP7 604448 (NanoMag) and MAT2017-83631-C3-R. Dr Norbert Schell is acknowledged for the time at the HEMS beamline, and J. F. thanks MUDP (MST-141-01415). ",

year = "2021",

doi = "10.1039/d0ra09226f",

language = "English",

volume = "11",

pages = "390--396",

journal = "RSC Advances",

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T1 - Revealing a masked Verwey transition in nanoparticles of coexisting Fe-oxide phases

AU - González-Alonso, David

AU - González, Jesús

AU - Gavilán, Helena

AU - Fock, Jeppe

AU - Zeng, Lunjie

AU - Witte, Kerstin

AU - Bender, Philipp

AU - Barquín, Luis Fernández

AU - Johansson, Christer

N1 - Funding Information: This work was supported by EU FP7 604448 (NanoMag) and MAT2017-83631-C3-R. Dr Norbert Schell is acknowledged for the time at the HEMS beamline, and J. F. thanks MUDP (MST-141-01415).

PY - 2021

Y1 - 2021

N2 - 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 ofca.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.

AB - 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 ofca.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.

U2 - 10.1039/d0ra09226f

DO - 10.1039/d0ra09226f

M3 - Journal article

C2 - 35423016

AN - SCOPUS:85100382814

SN - 2046-2069

VL - 11

SP - 390

EP - 396

JO - RSC Advances

JF - RSC Advances

IS - 1

ER -

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

Abstract

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