Orientational order-disorder γ $ β $ a0 $ a phase transitions in Sr2B2O5 pyroborate and crystal structures of β and a phases

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F17%3A00482855" target="_blank" >RIV/68378271:_____/17:00482855 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1107/S2052520617012689" target="_blank" >http://dx.doi.org/10.1107/S2052520617012689</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1107/S2052520617012689" target="_blank" >10.1107/S2052520617012689</a>

Result language

angličtina

Original language name

Orientational order-disorder γ $ β $ a0 $ a phase transitions in Sr2B2O5 pyroborate and crystal structures of β and a phases

Original language description

Crystal structures of Sr2B2O5 polymorphs resulting from the sequence of reversible first-order phase transitions are studied by high-temperature single-crystal X-ray diffraction, high-temperature X-ray powder diffraction, differential scanning calorimetry and impedance spectroscopy. The structures of two of these phases werendetermined for the first time. The sequence of phase transitions is associated with an unusual change of symmetry. The phase transitions are related to the orientational order–disorder arrangement of B2O5 pyroborate groups, where the degree of disorder grows towards the hightemperature phase. Thermal expansion is strongly anisotropic and dictated by preferable orientations of BO3 triangles in the structure.n

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

<a href="/en/project/LO1603" target="_blank" >LO1603: Centre of Technology and Advanced Structure Analysis of Materials with Application Impact</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Acta Crystallographica. Section B: Structural Science, Crystal Engineering and Materials

ISSN

2052-5206

e-ISSN

—

Volume of the periodical

73

Issue of the periodical within the volume

6

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

1056-1067

UT code for WoS article

000417608600005

EID of the result in the Scopus database

2-s2.0-85037674347