Abstract

Amplification of echo signals in ordered magnetic materials was postulated by many authors in the middle sixties. However, theoretical estimates of amplification were invariably several orders of magnitude higher than observed in ferrimagnetic materials. We have reformulated the equation of motion to include the nonlocal dipole-dipole interaction to describe the dynamic response of an echo. Our estimates of amplification compare reasonably well with measured values.

Notes

Originally published in Physical Review Letters 66, 1626-1629 (1991). doi 10.1103/PhysRevLetters66.1626 (http://link.aps.org/doi/10.1103/PhysRevLetters66.1626).

Keywords

ferrimagnetic echoes, amplification of echo signals, equation of motion, dipole interaction

Subject Categories

Magnetic materials

Disciplines

Electromagnetics and photonics

Publisher

American Physical Society

Publication Date

3-25-1991

Rights Information

Copyright 1991 American Physical Society

Rights Holder

American Physical Society

Click button above to open, or right-click to save.

Share

COinS