Back to Search
Start Over
On the influence of nanometer-thin antiferromagnetic surface layer on ferromagnetic CrO2.
- Source :
- Journal of Applied Physics; Sep2012, Vol. 112 Issue 5, p053921, 4p, 3 Graphs
- Publication Year :
- 2012
-
Abstract
- We investigate the influence of naturally grown 2-5 nm thin surface layer of antiferromagnetic (AFM) Cr<subscript>2</subscript>O<subscript>3</subscript> on the half metallic ferromagnet CrO<subscript>2</subscript> by measuring the magnetic behavior of a single micro-crystal. The temperature variation of the magnetic stray fields of the micro-crystal measured by micro-Hall magnetometry shows an anomalous increase below ∼60 K. We find clear evidence that this behavior is due to the influence of the AFM surface layer. The average amplitude of the Barkahausen jumps exhibits a similar temperature dependence indicating that the AFM surface layer plays a role in defining the potential landscape seen by the domain configuration in the ferromagnetic grain. [ABSTRACT FROM AUTHOR]
- Subjects :
- ANTIFERROMAGNETISM
CHROMIUM oxide
CRYSTALS
CRYSTAL structure
SURFACES (Physics)
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 112
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 80228706
- Full Text :
- https://doi.org/10.1063/1.4751350