Study the oxygen vacancies and Fe oxidation states in CaFeO3-δ perovskite nanomaterial

EK Abdel-Khalek, MA Motawea, MA Aboelnasr… - Physica B: Condensed …, 2022 - Elsevier
CaFeO 3-δ perovskite nanomaterial has been synthesized by sol-gel method. Rietveld
analysis of the X-Ray diffraction (XRD) data of the CaFeO 3-δ sample revealed orthorhombic …

Stabilization of dielectric anomaly near the magnetic phase transition in Ca2+ doped BiFeO3 multifunctional ceramics

P Tirupathi, A Chandra - Journal of alloys and compounds, 2013 - Elsevier
Stabilization of a prominent peak in the variation of dielectric constant in Ca2+ doped
BiFeO3 ceramics near the antiferromagnetic to paramagnetic phase transition is reported …

Ca-Do** of BiFeO3: The Role of Strain in Determining Coupling between Ferroelectric Displacements, Magnetic Moments, Octahedral Tilting, and Oxygen-Vacancy …

JA Schiemer, RL Withers, Y Liu… - Chemistry of …, 2013 - ACS Publications
Elastic and anelastic properties of a member of the BiFeO3–CaFeO2. 5 perovskite solid
solution (BCFO), which is known to have multiple instabilities, have been investigated by …

Electronic behavior of three oxygen non-stoichiometric Fe4+/Fe3+ oxoperovskites

HD Zhou, JB Goodenough - Journal of Solid State Chemistry, 2005 - Elsevier
For comparison with the Mn4+/Mn3+ oxoperovskites at the crossover from localized to
itinerant behavior of the σ-bonding e electrons, the electronic properties of three oxygen non …

Phase Transformations in Calcium‐Substituted Lanthanum Ferrite

PM Price, E Rabenberg, D Thomsen… - Journal of the …, 2014 - Wiley Online Library
Phase equilibria in the La1− x C axFeO3− δ (LCF) system were assessed at temperatures
below 1350° C in both simulated air and argon atmospheres using a combination of …

Designing Superlattices of Cuprates and Ferrites for Superconductivity

A Ikeda, Y Krockenberger, Y Taniyasu… - ACS Applied …, 2022 - ACS Publications
If a materials system tends to form metastable polymorphs, ie, materials with exactly identical
stoichiometries but different crystal structures, extrinsic forces, eg, pressure or strain, are …

Robust half-metallicity and magnetic properties of cubic perovskite CaFeO3

Z Ali, I Ahmad, B Khan, I Khan - Chinese Physics Letters, 2013 - iopscience.iop.org
Theoretical studies of the cubic perovskite CaFeO 3 are performed using the full potential
linearized augmented plane-wave method with GGA+ U. The calculated structural …

Structure of epitaxial films deposited on different perovskite-type substrates

MD Rossell, OI Lebedev, G Van Tendeloo… - Journal of applied …, 2004 - pubs.aip.org
The influence of the substrate on the structure and the microstructure of Ca 2 Fe 2 O 5 (CFO)
thin films has been investigated by transmission electron microscopy. Ca 2 Fe 2 O 5 films …

Synthesis ofAFeO2. 5+ x (0≤ x≤ 0.5; A= Sr, Ca) Mixed Oxides from the Oxidative Thermal Decomposition ofA [Fe (CN) 5NO]· 4H2O

MI Gomez, JA de Moran, RE Carbonio… - Journal of Solid State …, 1999 - Elsevier
The low-temperature formation of Sr and Ca ferrates by thermal oxidative decomposition of
tetrahydrates of Sr and Ca nitroprussides (pentacyanonitrosilferrates (II)) is reported. IR …

Study the influence of the crystal structure of the co-precipitated brownmillerite CaFeO2.5+δ sample on optical and magnetic properties

EK Abdel-Khalek, EA Mohamed, MA Motawea… - …, 2023 - Taylor & Francis
In this study, the brownmillerite CaFeO2. 5+ δ sample has been prepared by co-precipitation
method. The brownmillerite CaFeO2. 5+ δ sample crystallizes in a distorted orthorhombic …