Standard

Metastability of the K2NiF4 type structure of the solid solution LaCa(CrxAl1-x)O4(0≤x≤0.10). / Zvereva, I.; Zueva, L.; Choisnet, J.

In: Journal of Materials Science, Vol. 30, No. 14, 01.1995, p. 3598-3602.

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

Harvard

Zvereva, I, Zueva, L & Choisnet, J 1995, 'Metastability of the K2NiF4 type structure of the solid solution LaCa(CrxAl1-x)O4(0≤x≤0.10)', Journal of Materials Science, vol. 30, no. 14, pp. 3598-3602. https://doi.org/10.1007/BF00351871

APA

Zvereva, I., Zueva, L., & Choisnet, J. (1995). Metastability of the K2NiF4 type structure of the solid solution LaCa(CrxAl1-x)O4(0≤x≤0.10). Journal of Materials Science, 30(14), 3598-3602. https://doi.org/10.1007/BF00351871

Vancouver

Zvereva I, Zueva L, Choisnet J. Metastability of the K2NiF4 type structure of the solid solution LaCa(CrxAl1-x)O4(0≤x≤0.10). Journal of Materials Science. 1995 Jan;30(14):3598-3602. https://doi.org/10.1007/BF00351871

Author

Zvereva, I. ; Zueva, L. ; Choisnet, J. / Metastability of the K2NiF4 type structure of the solid solution LaCa(CrxAl1-x)O4(0≤x≤0.10). In: Journal of Materials Science. 1995 ; Vol. 30, No. 14. pp. 3598-3602.

BibTeX

@article{c6f3081d969446bca1b55f4669bd28ed,
title = "Metastability of the K2NiF4 type structure of the solid solution LaCa(CrxAl1-x)O4(0≤x≤0.10)",
abstract = "Metastability of the K2NiF4 type aluminate LaCaAlO4 and its chromium diluted solid solution LaCaCrxAl1-xO4 (x≤0.10) was evidenced at 1400‡C in air, in terms of demixing into the parent structures of the 1:1 intergrowth, i.e. the perovskite and rocksalt type LaAlO3 (LaCrxAl1-xO3) and CaO, respectively. This behaviour is discussed comparatively with YCaAlCO4 and LaSrAlO4 whose structures are stable under the same thermodynamic conditions. The results of a structure analysis are used to emphasize the role of the nine-fold co-ordination of the (A3+=Y3+, La3+; A2+=Ca2+, Sr2+) cations as {"}mixing{"} the twelve-fold co-ordination of A3+ in A3+AlO3 perovskite and the six-fold one of A2+ in A2+O rocksalt. Calcium-oxygen underbonding in the (La, Ca)-O-Al bridge is assumed to trigger the metastability of the intergrowth structure at high temperature.",
author = "I. Zvereva and L. Zueva and J. Choisnet",
year = "1995",
month = jan,
doi = "10.1007/BF00351871",
language = "English",
volume = "30",
pages = "3598--3602",
journal = "Journal of Materials Science",
issn = "0022-2461",
publisher = "Springer Nature",
number = "14",

}

RIS

TY - JOUR

T1 - Metastability of the K2NiF4 type structure of the solid solution LaCa(CrxAl1-x)O4(0≤x≤0.10)

AU - Zvereva, I.

AU - Zueva, L.

AU - Choisnet, J.

PY - 1995/1

Y1 - 1995/1

N2 - Metastability of the K2NiF4 type aluminate LaCaAlO4 and its chromium diluted solid solution LaCaCrxAl1-xO4 (x≤0.10) was evidenced at 1400‡C in air, in terms of demixing into the parent structures of the 1:1 intergrowth, i.e. the perovskite and rocksalt type LaAlO3 (LaCrxAl1-xO3) and CaO, respectively. This behaviour is discussed comparatively with YCaAlCO4 and LaSrAlO4 whose structures are stable under the same thermodynamic conditions. The results of a structure analysis are used to emphasize the role of the nine-fold co-ordination of the (A3+=Y3+, La3+; A2+=Ca2+, Sr2+) cations as "mixing" the twelve-fold co-ordination of A3+ in A3+AlO3 perovskite and the six-fold one of A2+ in A2+O rocksalt. Calcium-oxygen underbonding in the (La, Ca)-O-Al bridge is assumed to trigger the metastability of the intergrowth structure at high temperature.

AB - Metastability of the K2NiF4 type aluminate LaCaAlO4 and its chromium diluted solid solution LaCaCrxAl1-xO4 (x≤0.10) was evidenced at 1400‡C in air, in terms of demixing into the parent structures of the 1:1 intergrowth, i.e. the perovskite and rocksalt type LaAlO3 (LaCrxAl1-xO3) and CaO, respectively. This behaviour is discussed comparatively with YCaAlCO4 and LaSrAlO4 whose structures are stable under the same thermodynamic conditions. The results of a structure analysis are used to emphasize the role of the nine-fold co-ordination of the (A3+=Y3+, La3+; A2+=Ca2+, Sr2+) cations as "mixing" the twelve-fold co-ordination of A3+ in A3+AlO3 perovskite and the six-fold one of A2+ in A2+O rocksalt. Calcium-oxygen underbonding in the (La, Ca)-O-Al bridge is assumed to trigger the metastability of the intergrowth structure at high temperature.

UR - http://www.scopus.com/inward/record.url?scp=0029344763&partnerID=8YFLogxK

U2 - 10.1007/BF00351871

DO - 10.1007/BF00351871

M3 - Article

AN - SCOPUS:0029344763

VL - 30

SP - 3598

EP - 3602

JO - Journal of Materials Science

JF - Journal of Materials Science

SN - 0022-2461

IS - 14

ER -

ID: 88614893