Patent · US Active

Devices and methods for controlling magnetic anisotropy with localized biaxial strain in a piezoelectric substrate

US9685214B2 · kind B2 · utility

1Cited by

3References

12Claims

0Family size

Assignee

The Regents of the University of California · US

Inventors

Christopher S. Lynch · Sherman, US
Jizhai Cui · Los Angeles, US
Joshua Hockel · Los Angeles, US
Gregory P. Carman · Los Angeles, US

Key dates

Filing date	Jun 15, 2015
Grant date	Jun 20, 2017
Priority date	—
Expiry date	Jun 15, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG11C2013/0095
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Devices and methods for controlling magnetic anisotropy and orientation of magnetic single domain structures between stable states are provided based on piezoelectric thin films and patterned electrodes. By using patterned electrodes, piezoelectric strain is manipulated to achieve a highly localized biaxial strain in a piezoelectric substrate and rotate the magnetic anisotropy of magnetic materials. Reorientation of a magnetic single domain between different stable states is accomplished by pulsing voltage across pairs of electrodes. Since only a small region surrounding the electrodes is strained, the methods can be applied to arrays of indexed magnetic elements and to piezoelectric thin films clamped to silicon base substrates.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.