Anisotropic compression effects on nanocrystalline crystals of nickel oxide
Description
Nickel oxide (NiO) with bulk crystalline size is an antiferromagnetic insulator correlated strongly with crystal structure. A reduction in crystalline size causes a change in the magnetic sublattice, resulting in the appearance of ferromagnetic moments. Furthermore, in the nano crystals fabricated in mesoporous silica, there is a lattice distortion at the unit cell level that brings about the change in the magnetic property, suggesting a prominent magneto-structural correlation. We investigate anisotropic compression effects on nanocrystalline NiO with a crystalline size (D) of 11.4 nm to observe this remarkable magneto-structural correlation. Magneto-crystalline anisotropy is at its maximum when negative contraction occurs. The negative contraction appears even in a bulk crystal under non-ideal hydrostatic compression, and its anomalous structural change is suppressed with decreasing D.
Journal
-
- Journal of Magnetism and Magnetic Materials
-
Journal of Magnetism and Magnetic Materials 489 165407-1-165407-7, 2019-06-05
Elsevier
- Tweet
Details 詳細情報について
-
- CRID
- 1050569845441914496
-
- NII Article ID
- 120007043423
-
- ISSN
- 03048853
-
- HANDLE
- 10228/00008344
-
- Text Lang
- en
-
- Article Type
- journal article
-
- Data Source
-
- IRDB
- Crossref
- CiNii Articles
- KAKEN