Magnetic and Structural Properties of Fe-Based Nanoparticles

被引：0

作者：

Milkovic, O. ^{[1
,2
,3
]}

Cesnek, M. ^{[4
]}

Gamcova, J. ^{[1
,2
]}

Kmjec, T. ^{[5
]}

Kohout, J. ^{[5
]}

Reiffers, M. ^{[6
]}

Varga, R. ^{[7
]}

机构：

[1] Slovak Acad Sci, Inst Mat Res, Watsonova 47, Kosice 04001, Slovakia

[2] Tech Univ Kosice, Inst Mat & Qual Engn, Fac Mat Met & Recycling, Letna 9, Kosice 04200, Slovakia

[3] Slovak Acad Sci, Inst Expt Phys, Watsonova 47, Kosice, Slovakia

[4] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Dept Nucl Reactors, V Holesovickach 2, Prague 18000 8, Czech Republic

[5] Charles Univ Prague, Fac Math & Phys, V Holesovickach 2, Prague 18000, Czech Republic

[6] Presov Univ, Fac Humanities & Nat Sci, Presov, Slovakia

[7] Safarik Univ, CPM TIP, Pk Angelinum 9, Kosice 04154, Slovakia

来源：

ACTA PHYSICA POLONICA A | 2020年 / 137卷 / 05期

关键词：

D O I：

10.12693/APhysPolA.137.723

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this study, nanoparticles were prepared by precipitation from solid solution of saturated binary Cu-Fe alloy with subsequent electrochemical dissolution of the surrounding matrix. As-prepared nanoparticles were studied by the Mossbauer spectroscopy and scanning transmission electron microscopy. Results show that the as-prepared nanoparticles have core-shell character and their mean size is dependent on annealing time. The Mossbauer spectroscopy revealed major crystalline phase which was identified as alpha-Fe and relatively disordered minor phase which was identified as maghemite (gamma-Fe2O3). Magnetic measurements suggest that saturated magnetization is not only dependent on core diameter of nanoparticles but also on its structure.

引用

页码：723 / 725

页数：3

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