Accession Number:

ADA582732

Title:

Localized Defect Modes in a Two-Dimensional Array of Magnetic Nanodots

Descriptive Note:

Corporate Author:

OAKLAND UNIV ROCHESTER MI DEPT OF PHYSICS

Personal Author(s):

• Verba, Roman
• Tiberkevich, Vasil
• Bankowski, Elena
• Meitzler, Thomas
• Melkov, Gennadiy
• Slavin, Andrei

Report Date:

2013-06-22

Pagination or Media Count:

6.0

Abstract:

Microwave properties of an array of magnetic nanodots in a ferromagnetic state having a point defect - a dot with inverted magnetization or different material parameters - are considered. The existence of a single point defect in a dot array may lead to the appearance of several localized modes one defect eigenmode and several well modes, the number and structure of which strongly depend on the magnetostatic interaction between the dots. It is shown that by performing a ferromagnetic resonance 201FMR202 experiment in an array of magnetic dots containing a small number of defects it is possible to obtain the information about the entire spin-wave spectrum of the array.

Descriptors:

• *MAGNETIC PROPERTIES
• *NANODOTS
• FERROMAGNETIC RESONANCE
• MAGNETIZATION
• MAGNETOSTATICS
• MICROWAVES
• POINT DEFECTS
• SPIN WAVES
• TWO DIMENSIONAL

Subject Categories:

• Computer Hardware

Distribution Statement:

APPROVED FOR PUBLIC RELEASE