Sodium Chromium Arsenate Phosphates: Preparation, Structure, and Thermal Properties-Reference-Cited by-同舟云学术

Sodium Chromium Arsenate Phosphates: Preparation, Structure, and Thermal Properties

Published:2023-10-01 Issue:10 Volume:68 Page:1388-1397
ISSN:0044-457X
Container-title:Журнал неорганической химии
language:
Short-container-title:Žurnal neorganičeskoj himii

Author:

Pyaterikov E. A.¹,Pet’kov V. I.¹,Fukina D. G.¹,Borovikova E. Yu.²

Affiliation:

1. Nizhny Novgorod State University

2. Kola Scientific Center, Russian Academy of Sciences

Abstract

Arsenate phosphates(1.75 ≤ x ≤ 3.0) were prepared by coprecipitation. Their unit cell parameter was a linear function of composition: a (Å) = 0.0967x + 11.873. The Na3Cr2(AsO4)2PO4 crystal structure was refined by the Rietveld method; the coordinates of basal atoms and bond lengths were calculated. A garnet solid solution crystallizes at 600–650°C; transition to a high−temperature rhombohedral structure occurred at 994–1044°C. The thermal expansion of the low-temperature phase having a garnet structure was studied in the range from –130 to 200°C. The solid solution samples expanded isotropically and had small thermal expansion.

Publisher

The Russian Academy of Sciences

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