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Title: Forward volume and surface magnetostatic modes in an yttrium iron garnet film for out-of-plane magnetic fields: Theory and experiment

Journal Article · · AIP Advances
DOI:https://doi.org/10.1063/1.5007263· OSTI ID:1499115
ORCiD logo [1];  [1];  [1];  [2]; ORCiD logo [3]
  1. Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy
  2. Hong Kong Univ. of Science and Technology (China). Dept. of Physics
  3. Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy. Dept. of Electrical and Computer Engineering
+ Show Author Affiliations

We present experimental and theoretical results on the propagation of magnetostatic spin waves in a film of yttrium iron garnet (YIG) for out-of-plane magnetic fields for which propagation in opposite directions is nonreciprocal in the presence of a metal layer. The plane studied is defined by the film normal n and n × k where k is the wave vector of the mode. Spin waves in this setting are classified as forward volume waves or surface waves and display non-reciprocity in the presence of an adjacent metal layer except for when H//n. The measurements are carried out in a transmission geometry, and a microwave mixer is used to measure the change of phase, and with it the evolution of wavevector, of the arriving spin wave with external magnetic field.

Research Organization:
Northwestern Univ., Evanston, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0014424
OSTI ID:
1499115
Alternate ID(s):
OSTI ID: 1415064
Journal Information:
AIP Advances, Vol. 8, Issue 5; ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (6)

Magnetostatic surface waves on a y.i.g. slab journal January 1968
Surface magnetostatic modes of a ferrite slab journal January 1970
Magnetostatic modes of a ferromagnet slab journal May 1961
Propagation of Magnetostatic Spin Waves at Microwave Frequencies in a Normally‐Magnetized Disk journal November 1965
Nonreciprocal dispersion of spin waves in ferromagnetic thin films covered with a finite-conductivity metal journal March 2014
Magnetostatic Propagation in a Dielectric Layered Structure journal June 1972

Cited By (2)

Measurements of long-wavelength spin waves for the magnetic field in the Damon-Eshbach, backward-volume and forward-volume geometries of an yttrium iron garnet film journal March 2018
Phase detection of spin waves in yttrium iron garnet and metal induced nonreciprocity journal February 2019

Figures / Tables (5)

FIG. 1.(p. 3)figure FIG. 1.
FIG. 2.(p. 4)figure FIG. 2.
FIG. 3.(p. 5)figure FIG. 3.
FIG. 4.(p. 6)figure FIG. 4.
FIG. 5.(p. 6)figure FIG. 5.

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Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
Maxwell equations
surface waves
Fourier analysis
ferromagnetism
transition metals
thin films
dispersion function
microwave frequencies
crystalline solids
magnetic fields