Magnetic properties of MnAs nanocrystals embedded in GaAs

A. Kwiatkowski; D. Wasik; P. Dluzewski; J. Borysiuk; M. Kaminska; A. Twardowski; Janusz Sadowski

doi:10.1016/j.jmmm.2009.04.033

Magnetic properties of MnAs nanocrystals embedded in GaAs

A. Kwiatkowski, D. Wasik, P. Dluzewski, J. Borysiuk, M. Kaminska, A. Twardowski, Janusz Sadowski

MAX IV Laboratory

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

Abstract

A phenomenological model for explaining the magnetic properties of MnAs nanocrystals embedded in GaAs is proposed. It is shown that experimental data of DC magnetization as a function of temperature, obtained according to zero-field-cooled and field-cooled protocols, can be understood assuming a transition of the system from a low temperature state in which very slow dynamics is observed(frozen state) to a high-temperature state in which dynamics is fast(quasi superparamagnetic state). (C) 2009 Elsevier B. V. All rights reserved.

Original language	English
Pages (from-to)	2788-2791
Journal	Journal of Magnetism and Magnetic Materials
Volume	321
Issue number	18
DOIs	https://doi.org/10.1016/j.jmmm.2009.04.033
Publication status	Published - 2009

Subject classification (UKÄ)

Natural Sciences
Physical Sciences

Free keywords

Nanoprecipitate
Nanocrystal
Nanocomposite
Superparamagnet

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10.1016/j.jmmm.2009.04.033

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title = "Magnetic properties of MnAs nanocrystals embedded in GaAs",

abstract = "A phenomenological model for explaining the magnetic properties of MnAs nanocrystals embedded in GaAs is proposed. It is shown that experimental data of DC magnetization as a function of temperature, obtained according to zero-field-cooled and field-cooled protocols, can be understood assuming a transition of the system from a low temperature state in which very slow dynamics is observed(frozen state) to a high-temperature state in which dynamics is fast(quasi superparamagnetic state). (C) 2009 Elsevier B. V. All rights reserved.",

keywords = "Nanoprecipitate, Nanocrystal, Nanocomposite, Superparamagnet",

author = "A. Kwiatkowski and D. Wasik and P. Dluzewski and J. Borysiuk and M. Kaminska and A. Twardowski and Janusz Sadowski",

year = "2009",

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language = "English",

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TY - JOUR

T1 - Magnetic properties of MnAs nanocrystals embedded in GaAs

AU - Kwiatkowski, A.

AU - Wasik, D.

AU - Dluzewski, P.

AU - Borysiuk, J.

AU - Kaminska, M.

AU - Twardowski, A.

AU - Sadowski, Janusz

PY - 2009

Y1 - 2009

N2 - A phenomenological model for explaining the magnetic properties of MnAs nanocrystals embedded in GaAs is proposed. It is shown that experimental data of DC magnetization as a function of temperature, obtained according to zero-field-cooled and field-cooled protocols, can be understood assuming a transition of the system from a low temperature state in which very slow dynamics is observed(frozen state) to a high-temperature state in which dynamics is fast(quasi superparamagnetic state). (C) 2009 Elsevier B. V. All rights reserved.

AB - A phenomenological model for explaining the magnetic properties of MnAs nanocrystals embedded in GaAs is proposed. It is shown that experimental data of DC magnetization as a function of temperature, obtained according to zero-field-cooled and field-cooled protocols, can be understood assuming a transition of the system from a low temperature state in which very slow dynamics is observed(frozen state) to a high-temperature state in which dynamics is fast(quasi superparamagnetic state). (C) 2009 Elsevier B. V. All rights reserved.

KW - Nanoprecipitate

KW - Nanocrystal

KW - Nanocomposite

KW - Superparamagnet

U2 - 10.1016/j.jmmm.2009.04.033

DO - 10.1016/j.jmmm.2009.04.033

M3 - Article

SN - 0304-8853

VL - 321

SP - 2788

EP - 2791

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 18

ER -

Magnetic properties of MnAs nanocrystals embedded in GaAs

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Subject classification (UKÄ)

Free keywords

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