Evolution of transition metal charge states in correlation with the structural and magnetic properties in disordered double perovskites Ca<sub>2−<i>x</i></sub>La<sub><i>x</i></sub>FeRuO<sub>6</sub> (0.5 ≤ <i>x</i> ≤ 2)
Kumari Naveen, Tanmay Rom, S. S. Islam, M. Reehuis, Péter Adler, Claudia Felser, A. Hoser, R. Nath, Ashok K. Yadav, S. N. Jha, D. Bhattacharyya, Marcus Schmidt, Avijit Kumar Paul
Abstract
). Mössbauer spectroscopy confirms the presence of long-range ordering but, due to local variations in the exchange interactions, the magnetic states are microscopically inhomogeneous. All the samples are variable range hopping semiconductors. A complex interplay between structural features, charge states, anion or cation defects, and atomic disorder determines the magnetic properties of the present disordered 3d/4d double perovskite series.
Topics & Concepts
Charge orderingCondensed matter physicsTransition metalCharge (physics)Materials scienceMetalElectronic structureCrystallographyPerovskite (structure)Electronic correlationChemistryPhysicsMoleculeQuantum mechanicsCatalysisMetallurgyBiochemistryOrganic chemistryMagnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter PhysicsMultiferroics and related materials