Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Stress Tunable Antiferromagnetic Resonance in Zero Magnetic Field

IP.com Disclosure Number: IPCOM000094391D
Original Publication Date: 1966-Oct-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Eastman, DE: AUTHOR [+2]

Abstract

The application of static stress, e.g., uniaxial stress, to an antiferromagnet can have a large effect on its zero field resonance properties. This is especially true in low anisotropy antiferromagnets such as RbMnF(3). This large stress effect is due to magnetoelastic coupling and the nature of zero field antiferromagnetic resonance AFMR: (Image Omitted)

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Stress Tunable Antiferromagnetic Resonance in Zero Magnetic Field

The application of static stress, e.g., uniaxial stress, to an antiferromagnet can have a large effect on its zero field resonance properties. This is especially true in low anisotropy antiferromagnets such as RbMnF(3). This large stress effect is due to magnetoelastic coupling and the nature of zero field antiferromagnetic resonance AFMR:

(Image Omitted)

RbMnF(3) has an AFMR which occurs at about 10 Cc/sec at low temperatures. However, there are probably other low anisotropy antiferromagnets which exhibit similar stress controllable AFMR in the 10-200 Cc/sec range.

Drawing A is a plot of frequency squared in (Gc/sec)/2/ versus pressure in bars for antiferromagnetic resonance in zero magnetic field for RbMnF(3). Curve 2 is a plot of f/2/(1) and curve 4 is a plot of f/2/(2). Curve 6 is a plot of f/2/(1) which is equal to f/2/(2). When a stress of approximately 410 bars is applied to a sample crystal of RbM3F(3), resonance occurs at approximately 10 (Gc/sec)/2/. Drawing B shows how a crystal of RbMnF(3), maintained at temperatures near absolute zero, is employed as a microwave filter.

1

Page 2 of 2

2

[This page contains 4 pictures or other non-text objects]