학술논문
Phase Separation in the Double Perovskite Sr[sub.2]FeNbO[sub.6-δ]
Document Type
Report
Author
Source
Magnetochemistry. October 2023, Vol. 9 Issue 10
Subject
Language
English
ISSN
2312-7481
Abstract
Author(s): Daniil Popov [1]; Ruslan Batulin [2]; Mikhail Cherosov [2]; Farit Vagizov [2]; Almaz Zinnatullin [2]; Tatiana Chupakhina [3]; Yuliya Deeva [3]; Tanmoy Maiti [4]; Rushana Eremina (corresponding author) [1,*] [...]
The ceramic perovskite Sr[sub.2] FeNbO[sub.6-δ] was synthesized via the solution combustion precursor method. X-ray phase analysis showed that the sample is single-phase and does not contain impurities. The specific heat capacity and the Mössbauer spectra were measured for the Sr[sub.2] FeNbO[sub.6-δ] ceramic in the temperature range of 4–300 K. The observation of an asymmetric doublet in the Mössbauer spectra and the literature data on the magnetic susceptibility indicated the presence of two magnetic subsystems in Sr[sub.2] FeNbO[sub.6-δ] with antiferromagnetic exchange interactions. Based on the analysis of the temperature dependence of the specific heat capacity, we determined the Debye and Einstein temperatures.
The ceramic perovskite Sr[sub.2] FeNbO[sub.6-δ] was synthesized via the solution combustion precursor method. X-ray phase analysis showed that the sample is single-phase and does not contain impurities. The specific heat capacity and the Mössbauer spectra were measured for the Sr[sub.2] FeNbO[sub.6-δ] ceramic in the temperature range of 4–300 K. The observation of an asymmetric doublet in the Mössbauer spectra and the literature data on the magnetic susceptibility indicated the presence of two magnetic subsystems in Sr[sub.2] FeNbO[sub.6-δ] with antiferromagnetic exchange interactions. Based on the analysis of the temperature dependence of the specific heat capacity, we determined the Debye and Einstein temperatures.