ThuliumV1, Main, Exploration, bibRecordById, pubmed:24590122

Magnetic ordering in TmGa.

Identifieur interne : 000286 ( Main/Exploration ); précédent : 000285; suivant : 000287

Magnetic ordering in TmGa.

Auteurs : J M Cadogan [Australie] ; G A Stewart ; S. Mu Oz Pérez ; R. Cobas ; B R Hansen ; M. Avdeev ; W D Hutchison

Source :

Journal of physics. Condensed matter : an Institute of Physics journal [ 1361-648X ] ; 2014.

RBID : pubmed:24590122

Descripteurs français

KwdFr :
- Aimants (), Cristallisation, Cristallographie aux rayons X, Diffraction de neutrons, Diffraction sur poudre, Gallium (), Modèles moléculaires, Phénomènes magnétiques, Spectroscopie Mossbauer, Température, Thulium ().
MESH :
- Aimants, Cristallisation, Cristallographie aux rayons X, Diffraction de neutrons, Diffraction sur poudre, Gallium, Modèles moléculaires, Phénomènes magnétiques, Spectroscopie Mossbauer, Température, Thulium.

English descriptors

KwdEn :
- Crystallization, Crystallography, X-Ray, Gallium (chemistry), Magnetic Phenomena, Magnets (chemistry), Models, Molecular, Neutron Diffraction, Powder Diffraction, Spectroscopy, Mossbauer, Temperature, Thulium (chemistry).
MESH :
- chemical , chemistry : Gallium, Thulium.
- chemistry : Magnets.
- Crystallization, Crystallography, X-Ray, Magnetic Phenomena, Models, Molecular, Neutron Diffraction, Powder Diffraction, Spectroscopy, Mossbauer, Temperature.

Abstract

We have determined the magnetic structure of the intermetallic compound TmGa by high-resolution neutron powder diffraction and (169)Tm Mössbauer spectroscopy. This compound crystallizes in the orthorhombic (Cmcm) CrB-type structure and its magnetic structure is characterized by magnetic order of the Tm sublattice along the a-axis. The initial magnetic ordering occurs at 15(1) K and yields an incommensurate antiferromagnetic structure described by the propagation vector k1 = [0 0.275(2) 0]. At 12 K the dominant ferromagnetic ordering of the Tm sublattice along the a-axis develops in what appears to be a first-order transition. At 3 K the magnetic structure of TmGa is predominantly ferromagnetic but a weakened incommensurate component remains. The ferromagnetic Tm moment reaches 6.7(2) μB at 3 K and the amplitude of the remaining incommensurate component is 2.7(4) μB. The (169)Tm hyperfine magnetic field at 5 K is 631(1) T.

DOI: 10.1088/0953-8984/26/11/116002
PubMed: 24590122

Affiliations:

Australie

Le document en format XML

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<term>Diffraction sur poudre</term>
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<front><div type="abstract" xml:lang="en">We have determined the magnetic structure of the intermetallic compound TmGa by high-resolution neutron powder diffraction and (169)Tm Mössbauer spectroscopy. This compound crystallizes in the orthorhombic (Cmcm) CrB-type structure and its magnetic structure is characterized by magnetic order of the Tm sublattice along the a-axis. The initial magnetic ordering occurs at 15(1) K and yields an incommensurate antiferromagnetic structure described by the propagation vector k1 = [0 0.275(2) 0]. At 12 K the dominant ferromagnetic ordering of the Tm sublattice along the a-axis develops in what appears to be a first-order transition. At 3 K the magnetic structure of TmGa is predominantly ferromagnetic but a weakened incommensurate component remains. The ferromagnetic Tm moment reaches 6.7(2) μB at 3 K and the amplitude of the remaining incommensurate component is 2.7(4) μB. The (169)Tm hyperfine magnetic field at 5 K is 631(1) T.</div>
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Serveur d'exploration sur le thulium

Magnetic ordering in TmGa.

Magnetic ordering in TmGa.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

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