Published December 9, 2013
| Version v1
Journal article
Substantial enhancement in intrinsic coercivity on M-type strontium hexaferrite through the increase in magneto-crystalline anisotropy by co-doping of group-V and alkali elements
- 1. Materials R and D Center, Samsung Advanced Institute of Technology, Yongin-si, Gyeonggi-do 446-712 (Korea, Republic of)
Description
The effect of d1 impurity doping in Sr-hexaferrite (SrM) on the magnetic anisotropy is investigated. First-principles calculations revealed that group-V elements (V, Nb) are stabilized with co-doping of alkali elements. Na1+/K1+ doping at Sr2+-site is found to be critical to form the d1 impurities at Fe-site. Experimentally, Na–V doped SrM shows the intrinsic coercivity of ∼5.4 kOe, which is ∼300% enhancement compared to undoped SrM and comparable value to La–Co co-doped SrM. Finally, the spin-orbit coupling from non-vanishing angular momentum of d1 impurity in SrM should be a main factor for such a substantial improvement of intrinsic coercivity
Additional details
Identifiers
- DOI
- 10.1063/1.4850517;
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 103
- Journal Issue
- 24
- Journal Page Range
- p. 242417-242417.4
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 45074973
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ANISOTROPY; COERCIVE FORCE; DOPED MATERIALS; FERRITES; L-S COUPLING; STRONTIUM; STRONTIUM IONS
- Descriptors DEC
- ALKALINE EARTH METALS; CHARGED PARTICLES; COUPLING; ELEMENTS; FERRIMAGNETIC MATERIALS; INTERMEDIATE COUPLING; IONS; IRON COMPOUNDS; MAGNETIC MATERIALS; MATERIALS; METALS; OXYGEN COMPOUNDS; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- (c) 2013 AIP Publishing LLC