Formation of a series of chimney-ladder compounds in the Ru-Re-Si system

B. A. Simkin; A. Ishida; N. L. Okamoto; K. Kishida; K. Tanaka; H. Inui

doi:10.1016/j.actamat.2006.02.022

Formation of a series of chimney-ladder compounds in the Ru-Re-Si system

B. A. Simkin, A. Ishida, N. L. Okamoto, K. Kishida, K. Tanaka, H. Inui

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

19 Citations (Scopus)

Abstract

Rhenium-alloyed ruthenium sesquisilicide alloys have been prepared over the wide composition range Ru_1-δRe_δSi_1.5, 0 {less-than or slanted equal to} δ {less-than or slanted equal to} 0.85. The phase relationships of these alloys have been investigated using X-ray powder diffraction, scanning electron microscopy and transmission electron microscopy. Alloys with δ {greater than or slanted equal to} 0.03 are multi-phase, composed of a series of (Ru,Re)Si_y chimney-ladder phases with compositions of Ru_1-xRe_xSi_{1.5386+0.1783x} (0.14 {less-than or slanted equal to} x {less-than or slanted equal to} 0.76) and B20-type monosilicide (Ru,Re)Si as a secondary phase. These chimney-ladder structures are considered to form to stabilize the high-temperature Ru₂Si₃ chimney-ladder phase through the substitution of Ru with Re. The solubility limit of Re in a series of chimney-ladder phases is as large as 76% Re (x = 0.76) and the Si/(Ru + Re) ratio of the chimney-ladder phases increases with increasing Re content. The observed deviation of the chimney-ladder structure from the idealized composition and the possibility of adjusting the semiconducting properties of these chimney-ladder structures are discussed in terms of the valence electron concentration per metal atom.

Original language	English
Pages (from-to)	2857-2865
Number of pages	9
Journal	Acta Materialia
Volume	54
Issue number	10
DOIs	https://doi.org/10.1016/j.actamat.2006.02.022
Publication status	Published - 2006 Jun
Externally published	Yes

Keywords

Crystal structure
Electron diffraction
Semiconductor compounds
Transition metal silicides
Transmission electron microscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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10.1016/j.actamat.2006.02.022

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title = "Formation of a series of chimney-ladder compounds in the Ru-Re-Si system",

abstract = "Rhenium-alloyed ruthenium sesquisilicide alloys have been prepared over the wide composition range Ru1-δReδSi1.5, 0 {less-than or slanted equal to} δ {less-than or slanted equal to} 0.85. The phase relationships of these alloys have been investigated using X-ray powder diffraction, scanning electron microscopy and transmission electron microscopy. Alloys with δ {greater than or slanted equal to} 0.03 are multi-phase, composed of a series of (Ru,Re)Siy chimney-ladder phases with compositions of Ru1-xRexSi1.5386+0.1783x (0.14 {less-than or slanted equal to} x {less-than or slanted equal to} 0.76) and B20-type monosilicide (Ru,Re)Si as a secondary phase. These chimney-ladder structures are considered to form to stabilize the high-temperature Ru2Si3 chimney-ladder phase through the substitution of Ru with Re. The solubility limit of Re in a series of chimney-ladder phases is as large as 76% Re (x = 0.76) and the Si/(Ru + Re) ratio of the chimney-ladder phases increases with increasing Re content. The observed deviation of the chimney-ladder structure from the idealized composition and the possibility of adjusting the semiconducting properties of these chimney-ladder structures are discussed in terms of the valence electron concentration per metal atom.",

keywords = "Crystal structure, Electron diffraction, Semiconductor compounds, Transition metal silicides, Transmission electron microscopy",

author = "Simkin, {B. A.} and A. Ishida and Okamoto, {N. L.} and K. Kishida and K. Tanaka and H. Inui",

note = "Funding Information: This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture, Japan (No. 17656227) and in part by the 21st Century COE (Center of Excellence) Program on United Approach for New Materials Science from the Ministry of Education, Science and Culture, Japan. One of the authors (B.A.S.) expresses his great appreciation for the Fellowship from the Japan Society for the Promotion of Science. One of the authors (N.L.O.) also greatly appreciates the support from Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists. ",

year = "2006",

month = jun,

doi = "10.1016/j.actamat.2006.02.022",

language = "English",

volume = "54",

pages = "2857--2865",

journal = "Acta Materialia",

issn = "1359-6454",

publisher = "Elsevier Limited",

number = "10",

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TY - JOUR

T1 - Formation of a series of chimney-ladder compounds in the Ru-Re-Si system

AU - Simkin, B. A.

AU - Ishida, A.

AU - Okamoto, N. L.

AU - Kishida, K.

AU - Tanaka, K.

AU - Inui, H.

N1 - Funding Information: This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture, Japan (No. 17656227) and in part by the 21st Century COE (Center of Excellence) Program on United Approach for New Materials Science from the Ministry of Education, Science and Culture, Japan. One of the authors (B.A.S.) expresses his great appreciation for the Fellowship from the Japan Society for the Promotion of Science. One of the authors (N.L.O.) also greatly appreciates the support from Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists.

PY - 2006/6

Y1 - 2006/6

N2 - Rhenium-alloyed ruthenium sesquisilicide alloys have been prepared over the wide composition range Ru1-δReδSi1.5, 0 {less-than or slanted equal to} δ {less-than or slanted equal to} 0.85. The phase relationships of these alloys have been investigated using X-ray powder diffraction, scanning electron microscopy and transmission electron microscopy. Alloys with δ {greater than or slanted equal to} 0.03 are multi-phase, composed of a series of (Ru,Re)Siy chimney-ladder phases with compositions of Ru1-xRexSi1.5386+0.1783x (0.14 {less-than or slanted equal to} x {less-than or slanted equal to} 0.76) and B20-type monosilicide (Ru,Re)Si as a secondary phase. These chimney-ladder structures are considered to form to stabilize the high-temperature Ru2Si3 chimney-ladder phase through the substitution of Ru with Re. The solubility limit of Re in a series of chimney-ladder phases is as large as 76% Re (x = 0.76) and the Si/(Ru + Re) ratio of the chimney-ladder phases increases with increasing Re content. The observed deviation of the chimney-ladder structure from the idealized composition and the possibility of adjusting the semiconducting properties of these chimney-ladder structures are discussed in terms of the valence electron concentration per metal atom.

AB - Rhenium-alloyed ruthenium sesquisilicide alloys have been prepared over the wide composition range Ru1-δReδSi1.5, 0 {less-than or slanted equal to} δ {less-than or slanted equal to} 0.85. The phase relationships of these alloys have been investigated using X-ray powder diffraction, scanning electron microscopy and transmission electron microscopy. Alloys with δ {greater than or slanted equal to} 0.03 are multi-phase, composed of a series of (Ru,Re)Siy chimney-ladder phases with compositions of Ru1-xRexSi1.5386+0.1783x (0.14 {less-than or slanted equal to} x {less-than or slanted equal to} 0.76) and B20-type monosilicide (Ru,Re)Si as a secondary phase. These chimney-ladder structures are considered to form to stabilize the high-temperature Ru2Si3 chimney-ladder phase through the substitution of Ru with Re. The solubility limit of Re in a series of chimney-ladder phases is as large as 76% Re (x = 0.76) and the Si/(Ru + Re) ratio of the chimney-ladder phases increases with increasing Re content. The observed deviation of the chimney-ladder structure from the idealized composition and the possibility of adjusting the semiconducting properties of these chimney-ladder structures are discussed in terms of the valence electron concentration per metal atom.

KW - Crystal structure

KW - Electron diffraction

KW - Semiconductor compounds

KW - Transition metal silicides

KW - Transmission electron microscopy

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U2 - 10.1016/j.actamat.2006.02.022

DO - 10.1016/j.actamat.2006.02.022

M3 - Article

AN - SCOPUS:33646497219

VL - 54

SP - 2857

EP - 2865

JO - Acta Materialia

JF - Acta Materialia

SN - 1359-6454

IS - 10

ER -

Formation of a series of chimney-ladder compounds in the Ru-Re-Si system

Abstract

Keywords

ASJC Scopus subject areas

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