Neutron diffraction study of deuterium ordering in C15 type TaV2Dx (x>1) in the temperature range of 1.5-295 K

P. Fischer; F. Fauth; A. V. Skripov; A. A. Podlesnyak; L. N. Padurets; A. L. Shilov; B. Ouladdiaf

doi:10.1016/S0925-8388(96)02897-6

Neutron diffraction study of deuterium ordering in C15 type TaV₂D_x (x>1) in the temperature range of 1.5-295 K

P. Fischer, F. Fauth, A. V. Skripov, A. A. Podlesnyak, L. N. Padurets, A. L. Shilov, B. Ouladdiaf

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32 Scopus citations

Abstract

Neutron diffraction investigations on the C15-type Laves phase deutendes TaV₂D_x with nominal compositions 1.3≤x≤1.65 have shown that at T>150 K deuterium atoms (D) occupy 96g sites of space group Fd3̄m, i.e. tetrahedral interstices with [Ta₂V₂] coordination. However, the D positions are found to be considerably displaced from the geometrical centres of these sites. Below 150 K deuterium ordering is revealed by the appearance of superlattice peaks. Their intensities are found to increase substantially with increasing D content.

Original language	English
Pages (from-to)	282-285
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	253-254
DOIs	https://doi.org/10.1016/S0925-8388(96)02897-6
State	Published - May 20 1997
Externally published	Yes

Keywords

Laves phases
Neutron powder diffraction
Order-disorder transitions
Transition metal deutendes

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10.1016/S0925-8388(96)02897-6

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title = "Neutron diffraction study of deuterium ordering in C15 type TaV2Dx (x>1) in the temperature range of 1.5-295 K",

abstract = "Neutron diffraction investigations on the C15-type Laves phase deutendes TaV2Dx with nominal compositions 1.3≤x≤1.65 have shown that at T>150 K deuterium atoms (D) occupy 96g sites of space group Fd{\=3}m, i.e. tetrahedral interstices with [Ta2V2] coordination. However, the D positions are found to be considerably displaced from the geometrical centres of these sites. Below 150 K deuterium ordering is revealed by the appearance of superlattice peaks. Their intensities are found to increase substantially with increasing D content.",

keywords = "Laves phases, Neutron powder diffraction, Order-disorder transitions, Transition metal deutendes",

author = "P. Fischer and F. Fauth and Skripov, {A. V.} and Podlesnyak, {A. A.} and Padurets, {L. N.} and Shilov, {A. L.} and B. Ouladdiaf",

year = "1997",

month = may,

day = "20",

doi = "10.1016/S0925-8388(96)02897-6",

language = "English",

volume = "253-254",

pages = "282--285",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier",

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TY - JOUR

T1 - Neutron diffraction study of deuterium ordering in C15 type TaV2Dx (x>1) in the temperature range of 1.5-295 K

AU - Fischer, P.

AU - Fauth, F.

AU - Skripov, A. V.

AU - Podlesnyak, A. A.

AU - Padurets, L. N.

AU - Shilov, A. L.

AU - Ouladdiaf, B.

PY - 1997/5/20

Y1 - 1997/5/20

N2 - Neutron diffraction investigations on the C15-type Laves phase deutendes TaV2Dx with nominal compositions 1.3≤x≤1.65 have shown that at T>150 K deuterium atoms (D) occupy 96g sites of space group Fd3̄m, i.e. tetrahedral interstices with [Ta2V2] coordination. However, the D positions are found to be considerably displaced from the geometrical centres of these sites. Below 150 K deuterium ordering is revealed by the appearance of superlattice peaks. Their intensities are found to increase substantially with increasing D content.

AB - Neutron diffraction investigations on the C15-type Laves phase deutendes TaV2Dx with nominal compositions 1.3≤x≤1.65 have shown that at T>150 K deuterium atoms (D) occupy 96g sites of space group Fd3̄m, i.e. tetrahedral interstices with [Ta2V2] coordination. However, the D positions are found to be considerably displaced from the geometrical centres of these sites. Below 150 K deuterium ordering is revealed by the appearance of superlattice peaks. Their intensities are found to increase substantially with increasing D content.

KW - Laves phases

KW - Neutron powder diffraction

KW - Order-disorder transitions

KW - Transition metal deutendes

UR - http://www.scopus.com/inward/record.url?scp=0031130497&partnerID=8YFLogxK

U2 - 10.1016/S0925-8388(96)02897-6

DO - 10.1016/S0925-8388(96)02897-6

M3 - Article

AN - SCOPUS:0031130497

SN - 0925-8388

VL - 253-254

SP - 282

EP - 285

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Neutron diffraction study of deuterium ordering in C15 type TaV₂D_x (x>1) in the temperature range of 1.5-295 K

Abstract

Keywords

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