ε-Fe3N:: magnetic structure, magnetization and temperature dependent disorder of nitrogen

被引：105

作者：

Leineweber, A

Jacobs, H ^{[1
]}

Hüning, F

Lueken, H

Schilder, H

Kockelmann, W

机构：

[1] Univ Dortmund, Fachbereich Chem, D-44221 Dortmund, Germany

[2] Rhein Westfal TH Aachen, Inst Anorgan Chem, D-52056 Aachen, Germany

[3] FH Aachen, Fachbereich Chemieingenierurwesen, D-52074 Aachen, Germany

[4] Univ Bonn, Mineral Petrol Inst, D-53115 Bonn, Germany

[5] Rutherford Appleton Lab, ISIS, Didcot OX11 0QX, Oxon, England

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1999年 / 288卷 / 1-2期

关键词：

iron nitrides; magnetic structure; ordering of nitrogen; neutron diffraction;

D O I：

10.1016/S0925-8388(99)00150-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

epsilon-Fe3N has been investigated by time-of-flight neutron diffraction (temperature range 4.2-618 K) and SQUID magnetometry (2-700 K, B less than or equal to 5 T). A ferromagnetic spin structure is observed with magnetic moments oriented perpendicular to the c-axis of the hexagonal nuclear structure. The magnetic saturation moment of iron is 2.2 mu(B) at 4.2 K from neutron diffraction and 2.0 mu(B) from magnetic measurements and decreases in a Brillouin-like manner on heating to T-C = 575 K. Above 450 K an increasing but reversible disorder of the nitrogen partial structure is observed. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：79 / 87

页数：9

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