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High-temperature order–disorder phase transition in nacaphite, Na2CaPO4F. / Avdontceva, Margarita S.; Krzhizhanovskaya, Maria G.; Krivovichev, Sergey V.; Yakovenchuk, Viktor N.

In: Physics and Chemistry of Minerals, Vol. 42, No. 8, 2015, p. 671-676.

Research output: Contribution to journal › Article

Harvard

Avdontceva, MS, Krzhizhanovskaya, MG, Krivovichev, SV & Yakovenchuk, VN 2015, 'High-temperature order–disorder phase transition in nacaphite, Na2CaPO4F', Physics and Chemistry of Minerals, vol. 42, no. 8, pp. 671-676. https://doi.org/10.1007/s00269-015-0753-x

APA

Avdontceva, M. S., Krzhizhanovskaya, M. G., Krivovichev, S. V., & Yakovenchuk, V. N. (2015). High-temperature order–disorder phase transition in nacaphite, Na2CaPO4F. Physics and Chemistry of Minerals, 42(8), 671-676. https://doi.org/10.1007/s00269-015-0753-x

Vancouver

Avdontceva MS, Krzhizhanovskaya MG, Krivovichev SV, Yakovenchuk VN. High-temperature order–disorder phase transition in nacaphite, Na2CaPO4F. Physics and Chemistry of Minerals. 2015;42(8):671-676. https://doi.org/10.1007/s00269-015-0753-x

Author

Avdontceva, Margarita S. ; Krzhizhanovskaya, Maria G. ; Krivovichev, Sergey V. ; Yakovenchuk, Viktor N. / High-temperature order–disorder phase transition in nacaphite, Na2CaPO4F. In: Physics and Chemistry of Minerals. 2015 ; Vol. 42, No. 8. pp. 671-676.

BibTeX

@article{79ee95724a6b4b099c430397cea80e46,
title = "High-temperature order–disorder phase transition in nacaphite, Na2CaPO4F",
abstract = "{\textcopyright} 2015 Springer-Verlag Berlin Heidelberg The thermal behavior of nacaphite, Na2CaPO4F, was studied by the powder high-temperature X-ray diffraction method. A monoclinic-to-orthorhombic phase transition has been observed at 330 °C associated with the appearance of the Ca/Na disorder at one of the two crystallographically inequivalent Na sites. At room temperature, nacaphite is monoclinic, P21/c, a = 13.3185(14), b = 7.0964(8), c = 10.6490(11) {\AA}, β = 113.526(1)°, V = 922.81(17) {\AA}3. The structure is based upon one-dimensional antiperovskite units consisting of face-sharing [FNa4Ca2]7+ anion-centered octahedra running parallel to the c axis. The structure is fully ordered and contains two Ca and four Na sites. The crystal structure of the high-temperature modification [refined by Rietveld method (RB 0.025) at 400 °C from the powder X-ray diffraction data] is orthorhombic, Pnma, a = 5.4123(1), b = 7.1196(1), c = 12.3171(1) {\AA}, V",
author = "Avdontceva, {Margarita S.} and Krzhizhanovskaya, {Maria G.} and Krivovichev, {Sergey V.} and Yakovenchuk, {Viktor N.}",
year = "2015",
doi = "10.1007/s00269-015-0753-x",
language = "English",
volume = "42",
pages = "671--676",
journal = "Physics and Chemistry of Minerals",
issn = "0342-1791",
publisher = "Springer Nature",
number = "8",

}

RIS

TY - JOUR

T1 - High-temperature order–disorder phase transition in nacaphite, Na2CaPO4F

AU - Avdontceva, Margarita S.

AU - Krzhizhanovskaya, Maria G.

AU - Krivovichev, Sergey V.

AU - Yakovenchuk, Viktor N.

PY - 2015

Y1 - 2015

N2 - © 2015 Springer-Verlag Berlin Heidelberg The thermal behavior of nacaphite, Na2CaPO4F, was studied by the powder high-temperature X-ray diffraction method. A monoclinic-to-orthorhombic phase transition has been observed at 330 °C associated with the appearance of the Ca/Na disorder at one of the two crystallographically inequivalent Na sites. At room temperature, nacaphite is monoclinic, P21/c, a = 13.3185(14), b = 7.0964(8), c = 10.6490(11) Å, β = 113.526(1)°, V = 922.81(17) Å3. The structure is based upon one-dimensional antiperovskite units consisting of face-sharing [FNa4Ca2]7+ anion-centered octahedra running parallel to the c axis. The structure is fully ordered and contains two Ca and four Na sites. The crystal structure of the high-temperature modification [refined by Rietveld method (RB 0.025) at 400 °C from the powder X-ray diffraction data] is orthorhombic, Pnma, a = 5.4123(1), b = 7.1196(1), c = 12.3171(1) Å, V

AB - © 2015 Springer-Verlag Berlin Heidelberg The thermal behavior of nacaphite, Na2CaPO4F, was studied by the powder high-temperature X-ray diffraction method. A monoclinic-to-orthorhombic phase transition has been observed at 330 °C associated with the appearance of the Ca/Na disorder at one of the two crystallographically inequivalent Na sites. At room temperature, nacaphite is monoclinic, P21/c, a = 13.3185(14), b = 7.0964(8), c = 10.6490(11) Å, β = 113.526(1)°, V = 922.81(17) Å3. The structure is based upon one-dimensional antiperovskite units consisting of face-sharing [FNa4Ca2]7+ anion-centered octahedra running parallel to the c axis. The structure is fully ordered and contains two Ca and four Na sites. The crystal structure of the high-temperature modification [refined by Rietveld method (RB 0.025) at 400 °C from the powder X-ray diffraction data] is orthorhombic, Pnma, a = 5.4123(1), b = 7.1196(1), c = 12.3171(1) Å, V

U2 - 10.1007/s00269-015-0753-x

DO - 10.1007/s00269-015-0753-x

M3 - Article

VL - 42

SP - 671

EP - 676

JO - Physics and Chemistry of Minerals

JF - Physics and Chemistry of Minerals

SN - 0342-1791

IS - 8

ER -

ID: 3942428