2015/12/24 by Kalpataru Pradhan · 2 citations
Materials Science · Physics and Astronomy · #Advancements in Solid Oxide Fuel Cells #Dopant #Doping #Ferromagnetism #Lattice (music) #Lattice constant #Magnetic and transport properties of perovskites and related materials #Magnetic moment #Physics of Superconductivity and Magnetism #Valence (chemistry) #cond-mat.str-el
paper · pdf · doi:10.1063/1.4939644
published in Journal of Applied Physics 119(3) (American Institute of Physics)
arxiv created 2015/12/24 · openalex publication_date 2016/01/15 · openalex created_date 2016/06/24 · arxiv updated 2017/09/13 · openalex updated_date 2026/08/05
The magnetic nature of the B-site dopants controls the magnetic phases in B-site doped manganites RE1−xAExMn1−ηBηO3. Different B-site dopants of equal valence, doped into the same reference manganite, lead to different magnetic phases at low temperature, which cannot be explained using the valence change scenario. We focus on trivalent B-site dopants in CE-CO-OO-I (CE-type antiferromagnet; CO: charge order; OO: orbital order; I: Insulator) manganites at half-filling x = 0.50 to study the role of magnetic interactions between the B-site dopants and the neighboring Mn-sites by using a two-orbital double-exchange model including super-exchange interactions, Jahn-Teller lattice distortions, and substitutional disorder in two dimensions. We show that the magnetic reconstructions around the B-site dopants due to the modified double-exchange and super-exchange interactions control the phase competition in B-site doped manganites.