Structural evolution and magnetic properties of Mn-N compounds

W. J. Feng; N. K. Sun; J. Du; Q. Zhang; X. G. Liu; Y. F. Deng; Z. D. Zhang

doi:10.1016/j.ssc.2008.08.020

Structural evolution and magnetic properties of Mn-N compounds

W. J. Feng, N. K. Sun, J. Du, Q. Zhang, X. G. Liu, Y. F. Deng, Z. D. Zhang

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

26 Scopus citations

Abstract

Nanocrystalline Mn, Mn₄N and Mn₂N_0.86 are prepared by homogenization and nitrogenation of as-milled Mn powders under different conditions. Due to uncompensated surface spins, nanocrystalline Mn exhibits weak ferromagnetism, Mn₄N displays ferrimagnetism, while Mn₂N_0.86 dominant antiferromagnetism. The structural evolution of Mn→Mn₄N→Mn₂N_0.86 is interpreted as N atoms being in different percentages of the octahedral interstices of different Mn arrangements. In terms of the distances between Mn atoms with different atomic configurations of Mn(N) compounds, we think that the large discrepancy between the second-nearest distances of Mn₄N and Mn₂N_0.86 leads to their different magnetism.

Original language	English
Pages (from-to)	199-202
Number of pages	4
Journal	Solid State Communications
Volume	148
Issue number	5-6
DOIs	https://doi.org/10.1016/j.ssc.2008.08.020
State	Published - Nov 2008
Externally published	Yes

Funding

This work has been supported by the National Natural Science Foundation of China under Grant No. 50332020 and that of Liaoning Province under Grant No. 20072056.

Funders	Funder number
Liaoning Province	20072056
National Natural Science Foundation of China	50332020

Keywords

A. Magnetically ordered materials
B. Nitrides

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10.1016/j.ssc.2008.08.020

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title = "Structural evolution and magnetic properties of Mn-N compounds",

abstract = "Nanocrystalline Mn, Mn4N and Mn2N0.86 are prepared by homogenization and nitrogenation of as-milled Mn powders under different conditions. Due to uncompensated surface spins, nanocrystalline Mn exhibits weak ferromagnetism, Mn4N displays ferrimagnetism, while Mn2N0.86 dominant antiferromagnetism. The structural evolution of Mn→Mn4N→Mn2N0.86 is interpreted as N atoms being in different percentages of the octahedral interstices of different Mn arrangements. In terms of the distances between Mn atoms with different atomic configurations of Mn(N) compounds, we think that the large discrepancy between the second-nearest distances of Mn4N and Mn2N0.86 leads to their different magnetism.",

keywords = "A. Magnetically ordered materials, B. Nitrides",

author = "Feng, {W. J.} and Sun, {N. K.} and J. Du and Q. Zhang and Liu, {X. G.} and Deng, {Y. F.} and Zhang, {Z. D.}",

year = "2008",

month = nov,

doi = "10.1016/j.ssc.2008.08.020",

language = "English",

volume = "148",

pages = "199--202",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier",

number = "5-6",

}

TY - JOUR

T1 - Structural evolution and magnetic properties of Mn-N compounds

AU - Feng, W. J.

AU - Sun, N. K.

AU - Du, J.

AU - Zhang, Q.

AU - Liu, X. G.

AU - Deng, Y. F.

AU - Zhang, Z. D.

PY - 2008/11

Y1 - 2008/11

N2 - Nanocrystalline Mn, Mn4N and Mn2N0.86 are prepared by homogenization and nitrogenation of as-milled Mn powders under different conditions. Due to uncompensated surface spins, nanocrystalline Mn exhibits weak ferromagnetism, Mn4N displays ferrimagnetism, while Mn2N0.86 dominant antiferromagnetism. The structural evolution of Mn→Mn4N→Mn2N0.86 is interpreted as N atoms being in different percentages of the octahedral interstices of different Mn arrangements. In terms of the distances between Mn atoms with different atomic configurations of Mn(N) compounds, we think that the large discrepancy between the second-nearest distances of Mn4N and Mn2N0.86 leads to their different magnetism.

AB - Nanocrystalline Mn, Mn4N and Mn2N0.86 are prepared by homogenization and nitrogenation of as-milled Mn powders under different conditions. Due to uncompensated surface spins, nanocrystalline Mn exhibits weak ferromagnetism, Mn4N displays ferrimagnetism, while Mn2N0.86 dominant antiferromagnetism. The structural evolution of Mn→Mn4N→Mn2N0.86 is interpreted as N atoms being in different percentages of the octahedral interstices of different Mn arrangements. In terms of the distances between Mn atoms with different atomic configurations of Mn(N) compounds, we think that the large discrepancy between the second-nearest distances of Mn4N and Mn2N0.86 leads to their different magnetism.

KW - A. Magnetically ordered materials

KW - B. Nitrides

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U2 - 10.1016/j.ssc.2008.08.020

DO - 10.1016/j.ssc.2008.08.020

M3 - Article

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VL - 148

SP - 199

EP - 202

JO - Solid State Communications

JF - Solid State Communications

IS - 5-6

ER -

Structural evolution and magnetic properties of Mn-N compounds

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