Planar defects and dislocations in transition-metal disilicides

J 2015

Planar defects and dislocations in transition-metal disilicides

PAIDAR, Václav; M. ČÁK; Mojmír ŠOB and H. INUI

Basic information

Original name

Planar defects and dislocations in transition-metal disilicides

Authors

PAIDAR, Václav (203 Czech Republic); M. ČÁK (276 Germany); Mojmír ŠOB (203 Czech Republic, guarantor, belonging to the institution) and H. INUI (392 Japan)

Edition

Intermetallics, Oxford, Elsevier Science Ltd, 2015, 0966-9795

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10302 Condensed matter physics

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 2.541

RIV identification code

RIV/00216224:14740/15:00081238

Organization unit

Central European Institute of Technology

DOI

https://doi.org/10.1016/j.intermet.2014.11.003

UT WoS

000348626600007

EID Scopus

2-s2.0-84912143875

Keywords in English

Intermetallics; Dislocation structure; Planar faults; Ab-initio calculations

Abstract

In the original language

The structures of transition-metal disilicides are constituted of different stacking of identical atomic planes at four different positions A, B, C, D: AB in C11(b) structure of e.g. MoSi2, ABC in C40 structure of e.g. VSi2 and ABDC in C54 structure of e.g. TiSi2 disilicides. In comparison with the FCC lattice with the ABC atomic plane stacking along the <111> directions, the occurrence of the fourth position, D, essentially alters the properties of defects and consequently the mechanical properties. The effect of generalized planar defects and their impacts on the dislocation core structures are discussed. In particular, we examine stacking faults and related partial dislocations on the basal planes in different types of disilicides as well as the related twin boundaries and dissociated dislocations. Our analysis of the stacking-fault-like defects is based on the calculations of gamma-surfaces using ab initio methods. Predictions of possible metastable defects in all types of disilicides are reported. (C) 2014 Elsevier Ltd. All rights reserved.

Links

ED1.1.00/02.0068, research and development project

Name: CEITEC - central european institute of technology

GA14-22490S, research and development project

Name: Struktura, magnetismus a pevnost rozhraní v pokročilých kovových materiálech

Investor: Czech Science Foundation

Cite

PAIDAR, Václav; M. ČÁK; Mojmír ŠOB and H. INUI. Planar defects and dislocations in transition-metal disilicides. Intermetallics. Oxford: Elsevier Science Ltd, 2015, vol. 58, march, p. 43-49. ISSN 0966-9795. Available from: https://doi.org/10.1016/j.intermet.2014.11.003.

@article{1318700,
   author = {Paidar, Václav and Čák, M. and Šob, Mojmír and Inui, H.},
   article_location = {Oxford},
   article_number = {march},
   doi = {https://doi.org/10.1016/j.intermet.2014.11.003},
   keywords = {Intermetallics; Dislocation structure; Planar faults; Ab-initio calculations},
   language = {eng},
   issn = {0966-9795},
   journal = {Intermetallics},
   title = {Planar defects and dislocations in transition-metal disilicides},
   url = {http://ac.els-cdn.com/S0966979514002908/1-s2.0-S0966979514002908-main.pdf?_tid=a54345b6-9413-11e5-bfbf-00000aacb35e&acdnat=1448524960_7fd68515c22eadb9213dfad24a34b3a8},
   volume = {58},
   year = {2015}
}

TY  - JOUR
ID  - 1318700
AU  - Paidar, Václav - Čák, M. - Šob, Mojmír - Inui, H.
PY  - 2015
TI  - Planar defects and dislocations in transition-metal disilicides
JF  - Intermetallics
VL  - 58
IS  - march
SP  - 43-49
EP  - 43-49
PB  - Elsevier Science Ltd
SN  - 09669795
KW  - Intermetallics
KW  - Dislocation structure
KW  - Planar faults
KW  - Ab-initio calculations
UR  - http://ac.els-cdn.com/S0966979514002908/1-s2.0-S0966979514002908-main.pdf?_tid=a54345b6-9413-11e5-bfbf-00000aacb35e&acdnat=1448524960_7fd68515c22eadb9213dfad24a34b3a8
L2  - http://ac.els-cdn.com/S0966979514002908/1-s2.0-S0966979514002908-main.pdf?_tid=a54345b6-9413-11e5-bfbf-00000aacb35e&acdnat=1448524960_7fd68515c22eadb9213dfad24a34b3a8
N2  - The structures of transition-metal disilicides are constituted of different stacking of identical atomic planes at four different positions A, B, C, D: AB in C11(b) structure of e.g. MoSi2, ABC in C40 structure of e.g. VSi2 and ABDC in C54 structure of e.g. TiSi2 disilicides. In comparison with the FCC lattice with the ABC atomic plane stacking along the <111> directions, the occurrence of the fourth position, D, essentially alters the properties of defects and consequently the mechanical properties. The effect of generalized planar defects and their impacts on the dislocation core structures are discussed. In particular, we examine stacking faults and related partial dislocations on the basal planes in different types of disilicides as well as the related twin boundaries and dissociated dislocations. Our analysis of the stacking-fault-like defects is based on the calculations of gamma-surfaces using ab initio methods. Predictions of possible metastable defects in all types of disilicides are reported. (C) 2014 Elsevier Ltd. All rights reserved.
ER  -

PAIDAR, Václav; M. ČÁK; Mojmír ŠOB and H. INUI. Planar defects and dislocations in transition-metal disilicides. \textit{Intermetallics}. Oxford: Elsevier Science Ltd, 2015, vol.~58, march, p.~43-49. ISSN~0966-9795. Available from: https://doi.org/10.1016/j.intermet.2014.11.003.

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