The nature of special points on unit cell parameters temperature dependences for crystal substances

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The nature of special points on unit cell parameters temperature dependences for crystal substances. / Filatov, Stanislav K.; Bubnova, Rimma S.

In: Zeitschrift fur Kristallographie, Supplement, Vol. 2, No. 26, 01.01.2007, p. 447-452.

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

BibTeX

@article{a7a8831d0f524ac2be47926bbfcbc2cf,

title = "The nature of special points on unit cell parameters temperature dependences for crystal substances",

abstract = "Two factors complicating thermal expansion of crystals are given. (1) Heating of a metastable crystal phase at low temperatures represents usually thermal expansion only. At higher temperatures, above a glass transition temperature Tg, structural reconstruction to a stable phase is involved into the expansion. (2) The atomic vibration size in a direction of the longest vibration amplitudes can be sharply increased. In this case on heating above definite temperature, neighboring cations that were not in touch start to repel each other along this direction - an additional mechanism of thermal deformations switches on. The both these phenomena show as special points on temperature dependence for unit cell parameters.",

keywords = "Crystal compounds, Powder diffraction, Special points, Thermal expansion",

author = "Filatov, {Stanislav K.} and Bubnova, {Rimma S.}",

year = "2007",

month = jan,

day = "1",

doi = "10.1524/zksu.2007.2007.suppl_26.447",

language = "English",

volume = "2",

pages = "447--452",

journal = "Supplement issues of Zeitschrift f{\"u}r Kristallographie",

issn = "0930-486X",

publisher = "R. Oldenbourg",

number = "26",

}

RIS

TY - JOUR

T1 - The nature of special points on unit cell parameters temperature dependences for crystal substances

AU - Filatov, Stanislav K.

AU - Bubnova, Rimma S.

PY - 2007/1/1

Y1 - 2007/1/1

N2 - Two factors complicating thermal expansion of crystals are given. (1) Heating of a metastable crystal phase at low temperatures represents usually thermal expansion only. At higher temperatures, above a glass transition temperature Tg, structural reconstruction to a stable phase is involved into the expansion. (2) The atomic vibration size in a direction of the longest vibration amplitudes can be sharply increased. In this case on heating above definite temperature, neighboring cations that were not in touch start to repel each other along this direction - an additional mechanism of thermal deformations switches on. The both these phenomena show as special points on temperature dependence for unit cell parameters.

AB - Two factors complicating thermal expansion of crystals are given. (1) Heating of a metastable crystal phase at low temperatures represents usually thermal expansion only. At higher temperatures, above a glass transition temperature Tg, structural reconstruction to a stable phase is involved into the expansion. (2) The atomic vibration size in a direction of the longest vibration amplitudes can be sharply increased. In this case on heating above definite temperature, neighboring cations that were not in touch start to repel each other along this direction - an additional mechanism of thermal deformations switches on. The both these phenomena show as special points on temperature dependence for unit cell parameters.

KW - Crystal compounds

KW - Powder diffraction

KW - Special points

KW - Thermal expansion

UR - http://www.scopus.com/inward/record.url?scp=54849428008&partnerID=8YFLogxK

U2 - 10.1524/zksu.2007.2007.suppl_26.447

DO - 10.1524/zksu.2007.2007.suppl_26.447

M3 - Article

AN - SCOPUS:54849428008

VL - 2

SP - 447

EP - 452

JO - Supplement issues of Zeitschrift für Kristallographie

JF - Supplement issues of Zeitschrift für Kristallographie

SN - 0930-486X

IS - 26

ER -

ID: 53950641