The formation of two distinct derivative structures of Ti2Ni-type, interstitial Pd3Cu3B and substitutive Pd5Cu5B2, has been elucidated in Pd-Cu-B alloys from analysis of X-ray single crystal and powder diffraction data and supported by SEM. The metal atom arrangement in the new boride Pd3Cu3B (space group , W3Fe3C-type structure, a=1.1136(3) nm) follows the pattern of atom distribution in the CdNi-type structure. Pd5Cu5B2 (space group , a=1.05273(5) nm) exhibits a non-centrosymmetric substitutive derivative of the Ti2Ni-type structure. The reduction of symmetry on passing from Ti2Ni-type structure to Pd5Cu5B2 corresponds to the loss of the axis delivered by an ordered occupation of the Ni position (32e) by dissimilar atoms, Cu and B. In both structures, the boron atom has only contact to Pd forming [BPd6] octahedra in Pd3Cu3B and [BPd6] trigonal prisms in Pd5Cu5B2. Neither a perceptible homogeneity range nor mutual solid solubility was observed for two compounds at 600 °C, while in as cast conditions Pd5Cu5B2 exhibits extended homogeneity range formed by a partial substitution of Cu atoms (in 24f) by Pd (Pd5+xCu5-xB2, 0≤x≤1). Electrical resistivity measurements performed on Pd3Cu3B as well as on Pd-poor and Pd-rich termini of Pd5+xCu5-xB2 annealed at 600 °C and in as cast conditions respectively demonstrated the absence of any phase transitions for this compounds in the temperature region from 0.3 K to 300 K.
en
dc.description.sponsorship
Austrian Science Funds (FWF)
-
dc.language
English
-
dc.language.iso
en
-
dc.publisher
Royal Society of Chemistry
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dc.relation.ispartof
Dalton Transactions
-
dc.rights.uri
http://rightsstatements.org/vocab/InC/1.0/
-
dc.subject
boron
en
dc.title
Boron induced structure modifications in Pd-Cu-B system: new Ti2Ni-type derivative borides Pd3Cu3B and Pd5Cu5B2
en
dc.type
Article
en
dc.type
Artikel
de
dc.rights.license
Urheberrechtsschutz
de
dc.rights.license
In Copyright
en
dc.relation.grantno
V279-N19
-
dc.rights.holder
The Royal Society of Chemistry 2016
-
dc.type.category
Original Research Article
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tuw.journal.peerreviewed
true
-
tuw.peerreviewed
true
-
tuw.version
am
-
dcterms.isPartOf.title
Dalton Transactions
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tuw.publication.orgunit
E138 - Institut für Festkörperphysik
-
tuw.publisher.doi
10.1039/C5DT05058H
-
dc.date.onlinefirst
2016-02-05
-
dc.identifier.eissn
1477-9234
-
dc.identifier.libraryid
AC11364798
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dc.description.numberOfPages
23
-
dc.identifier.urn
urn:nbn:at:at-ubtuw:3-3226
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tuw.author.orcid
0000-0003-2168-1901
-
tuw.author.orcid
0000-0002-7997-9463
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tuw.author.orcid
0000-0002-1670-7655
-
tuw.author.orcid
0000-0002-0087-474X
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tuw.author.orcid
0000-0002-7733-1612
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tuw.author.orcid
0000-0001-7376-5897
-
dc.rights.identifier
Urheberrechtsschutz
de
dc.rights.identifier
In Copyright
en
wb.sci
true
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item.fulltext
with Fulltext
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item.cerifentitytype
Publications
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item.openairecristype
http://purl.org/coar/resource_type/c_2df8fbb1
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item.languageiso639-1
en
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item.openaccessfulltext
Open Access
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item.openairetype
research article
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item.grantfulltext
open
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crisitem.author.dept
E138-02 - Forschungsbereich Correlations: Theory and Experiments
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crisitem.author.dept
E138-03 - Forschungsbereich Functional and Magnetic Materials
-
crisitem.author.dept
E138-04 - Forschungsbereich Quantum Materials
-
crisitem.author.dept
E057-04 - Fachbereich Röntgenzentrum
-
crisitem.author.dept
E164 - Institut für Chemische Technologien und Analytik
-
crisitem.author.dept
E138-03 - Forschungsbereich Functional and Magnetic Materials