Premium
High‐Temperature Ferromagnetism and Tunable Semiconductivity of (Ba, Sr)M 2 ± x Ru 4 ∓ x O 11 (M = Fe, Co): A New Paradigm for Spintronics
Author(s) -
Shlyk Larysa,
Kryukov Sergiy,
SchüppNiewa Barbara,
Niewa Rainer,
De Long Lance E.
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200701951
Subject(s) - spintronics , materials science , ferromagnetism , ternary operation , homogeneity (statistics) , condensed matter physics , atmospheric temperature range , ruthenium , nanotechnology , thermodynamics , catalysis , chemistry , physics , biochemistry , statistics , mathematics , computer science , programming language
Ternary ruthenium ferrites (Ba,Sr)Fe 2 ± x Ru 4 ∓ x O 11 exhibit long‐range ferromagnetic order well above room temperature along with favorable narrow‐ gap semiconducting properties. Electronic structure and physical properties can be tuned by simple chemical substitution of two elements, Fe and Co, or by varying the relative concentration of 3d and 4d elements within the homogeneity range. These promising properties within a single structural family open up a host of potential device applications.