Crystal, magnetic and electronic structures of 3d–5d ordered double perovskite Ba 2 CoReO 6

Observation of A -site antiferromagnetic and B -site ferrimagnetic orderings in the quadruple perovskite oxide CaCu3Co2Liu1, Wang2, Ye3 et al. 2021Phys. Rev. B15010View full textAdd to dashboardCite

“…In addition, it is interesting to compare the Co 2+ /Re 6+ magnetism of CCCRO with that observed in the A 2 Co 2+ Re 6+ O 6 double-perovskite family with A = Ca, Sr, and Ba. Specifically, Ba 2 CoReO 6 has a cubic F m-3m crystal structure with a 180°Co-O-Re bond angle, and shows noncollinear helical-type AFM ordering [31,32]. Sr 2 CoReO 6 crystallizes in a tetragonal I4/m crystal structure with an average 014414-5…”

Structural Chemistry and Magnetic Properties of the Hexagonal Double Perovskite Ba2CoOsO6

“…Based on the tolerance factor ( t ), which is slightly greater than 1, these phases are expected to lie on the border between hexagonal and cubic symmetry. Indeed, the corresponding perovskites containing Mo, W, and Re, with t = 1.027, 1.029, and 1.039, have been described in the cubic Fm 3̅ m space group; , while B = Ir ( t = 1.069) crystallizes in the rhombohedral space group R 3̅ m , and the Ru-based perovskite ( t = 1.07) exhibits hexagonal P 6 3 /mcm symmetry. It is interesting that the most stable structure at ambient pressure for Ba 2 CoOsO 6 ( t = 1.04) has the unusual trigonal P 3̅ m 1 symmetry, which is expected to undergo phase transition into the cubic symmetry under pressure, as it has been observed in the equivalent Ba 2 NiOsO 6 compound .…”

Microstructural and dielectric characteristics of the Ce-doped Bi\(_{2}\)FeMnO\(_{6}\)

“…Increased oxygen vacancies in double perovskites may affect the conductivity, which is good for electrochemical performance [21]. The dopants and synthesis processes affect the unusual physical properties of the double perovskites.The improved dielectric properties and transport mechanism in the double perovskite may be suitable for multilayer capacitors, memory, and microelectronic devices [22][23][24]. In this connection, we have gone through the journal article of cerium doped NiFe2O4 ferrite which fabricated by solid state reaction technique and this material was reported by Shirsath et al (2011).…”