The Composition and Magnetic Structure of Fe3O4/γ-Fe2O3 Core-Shell Nanocomposites under External Magnetic Field: Mössbauer Study (Part II)

A. S. Kamzin; I. M. Obaidat; A. A. Valliulin; V. G. Semenov; I. A. Al-Omari

doi:10.1134/S1063783420110153

The Composition and Magnetic Structure of Fe₃O₄/γ-Fe₂O₃ Core-Shell Nanocomposites under External Magnetic Field: Mössbauer Study (Part II)

A. S. Kamzin
, I. M. Obaidat
, A. A. Valliulin
, V. G. Semenov
, I. A. Al-Omari

Department of Physics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Abstract: The composition and the magnetic structure of Fe₃O₄/γ-Fe₂O₃ nanoparticles placed into external magnetic field with a strength of 1.8 kOe are studied with Mössbauer spectroscopy. We showed that the thickness of the maghemite (γ-Fe₂O₃) shell can be changed by the synthesis conditions. We found that there is a layer, in which the magnetic moments are not oriented collinearly to those located in the depth of the shell, on the surface of maghemite (γ-Fe₂O₃) shell in the Fe₃O₄/γ-Fe₂O₃ nanocomposites; in other words, there is a canted spin structure. An intermediate layer in the spin-glass state is formed between the core and the shell. The data on structure of core/shell particles are important to understand the properties of nanocomposites, which are of great interest to apply in various fields, including biomedicine.

Original language	English
Pages (from-to)	2167-2172
Number of pages	6
Journal	Physics of the Solid State
Volume	62
Issue number	11
DOIs	https://doi.org/10.1134/S1063783420110153
Publication status	Published - Nov 2020

Keywords

biomedicine
core/shell
magnetic composites
magnetic nanocomposites
magnetic nanoparticles

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1134/S1063783420110153

Cite this

@article{b0906ee73960498aa7c20d114c7824cd,

title = "The Composition and Magnetic Structure of Fe3O4/γ-Fe2O3 Core-Shell Nanocomposites under External Magnetic Field: M{\"o}ssbauer Study (Part II)",

abstract = "Abstract: The composition and the magnetic structure of Fe3O4/γ-Fe2O3 nanoparticles placed into external magnetic field with a strength of 1.8 kOe are studied with M{\"o}ssbauer spectroscopy. We showed that the thickness of the maghemite (γ-Fe2O3) shell can be changed by the synthesis conditions. We found that there is a layer, in which the magnetic moments are not oriented collinearly to those located in the depth of the shell, on the surface of maghemite (γ-Fe2O3) shell in the Fe3O4/γ-Fe2O3 nanocomposites; in other words, there is a canted spin structure. An intermediate layer in the spin-glass state is formed between the core and the shell. The data on structure of core/shell particles are important to understand the properties of nanocomposites, which are of great interest to apply in various fields, including biomedicine.",

keywords = "biomedicine, core/shell, magnetic composites, magnetic nanocomposites, magnetic nanoparticles",

author = "Kamzin, \{A. S.\} and Obaidat, \{I. M.\} and Valliulin, \{A. A.\} and Semenov, \{V. G.\} and Al-Omari, \{I. A.\}",

note = "Publisher Copyright: {\textcopyright} 2020, Pleiades Publishing, Ltd.",

year = "2020",

month = nov,

doi = "10.1134/S1063783420110153",

language = "English",

volume = "62",

pages = "2167--2172",

journal = "Physics of the Solid State",

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T1 - The Composition and Magnetic Structure of Fe3O4/γ-Fe2O3 Core-Shell Nanocomposites under External Magnetic Field

T2 - Mössbauer Study (Part II)

AU - Kamzin, A. S.

AU - Obaidat, I. M.

AU - Valliulin, A. A.

AU - Semenov, V. G.

AU - Al-Omari, I. A.

PY - 2020/11

Y1 - 2020/11

N2 - Abstract: The composition and the magnetic structure of Fe3O4/γ-Fe2O3 nanoparticles placed into external magnetic field with a strength of 1.8 kOe are studied with Mössbauer spectroscopy. We showed that the thickness of the maghemite (γ-Fe2O3) shell can be changed by the synthesis conditions. We found that there is a layer, in which the magnetic moments are not oriented collinearly to those located in the depth of the shell, on the surface of maghemite (γ-Fe2O3) shell in the Fe3O4/γ-Fe2O3 nanocomposites; in other words, there is a canted spin structure. An intermediate layer in the spin-glass state is formed between the core and the shell. The data on structure of core/shell particles are important to understand the properties of nanocomposites, which are of great interest to apply in various fields, including biomedicine.

AB - Abstract: The composition and the magnetic structure of Fe3O4/γ-Fe2O3 nanoparticles placed into external magnetic field with a strength of 1.8 kOe are studied with Mössbauer spectroscopy. We showed that the thickness of the maghemite (γ-Fe2O3) shell can be changed by the synthesis conditions. We found that there is a layer, in which the magnetic moments are not oriented collinearly to those located in the depth of the shell, on the surface of maghemite (γ-Fe2O3) shell in the Fe3O4/γ-Fe2O3 nanocomposites; in other words, there is a canted spin structure. An intermediate layer in the spin-glass state is formed between the core and the shell. The data on structure of core/shell particles are important to understand the properties of nanocomposites, which are of great interest to apply in various fields, including biomedicine.

KW - biomedicine

KW - core/shell

KW - magnetic composites

KW - magnetic nanocomposites

KW - magnetic nanoparticles

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