| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7882674 | Acta Materialia | 2014 | 10 Pages |
Abstract
The magnetic and crystallographic microstructures in Fe2.5Zn0.5O4 (FZO) wires fabricated using nano-imprint lithography, pulsed laser deposition and a molybdenum lift-off mask technique were studied by transmission electron microscopy (TEM). A process using a focused ion beam completely separated the FZO wires from the insulating MgO substrate, and accordingly allowed in-depth TEM studies of the domain structures. Observations using energy-filtered TEM demonstrated good crystallinity of the FZO wires. Both Lorentz microscopy and electron holography studies revealed unexpectedly small magnetic domains (â¼100Â nm or smaller) due to a significant interaction with antiphase boundaries. The role of antiphase boundaries on the functionalities observed in the constrained wires (e.g., nonlinear I-V characteristics and large magnetoresistance) is discussed on the basis of these microscopic observations.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Y. Murakami, A. Ohta, A.N. Hattori, T. Kanki, S. Aizawa, T. Tanigaki, H.S. Park, H. Tanaka, D. Shindo,