In-situ magnetization/heating electron holography to study the magnetic ordering in arrays of nickel metallic nanowires
Abstract
Magnetic nanostructures of different size, shape, and composition possess a great potential to improve current technologies like data storage and electromagnetic sensing. In thin ferromagnetic nanowires, their magnetization behavior is dominated by the competition between magnetocrystalline anisotropy (related to the crystalline structure) and shape anisotropy. In this way electron diffraction methods like precession electron diffraction (PED) can be used to link the magnetic behavior observed by Electron Holography (EH) with its crystallinity. Using off-axis electron holography under Lorentz conditions, we can experimentally determine the magnetization distribution over neighboring nanostructures and their diamagnetic matrix. In the case of a single row of nickel nanowires within the alumina template, the thin TEM samples showed a dominant antiferromagnetic arrangement demonstrating long-range magnetostatic interactions playing a major role.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 09, 2018
- Source ID
- 10.1063/1.5007671
Entities
People
- Arturo Ponce
- Carlos Monton
- Eduardo Ortega
- Jason G Giuliani
- Ulises Santiago
Organizations
- Consejo Nacional de Humanidades, Ciencias y Tecnologías
- National Institute for Astrophysics
- National Institute on Minority Health and Health Disparities
- National Science Foundation
- United States Department of Defense
- University of Texas at San Antonio