Change search
ReferencesLink to record
Permanent link

Direct link
Memory element with magneto-thermo-electronic control
KTH, School of Engineering Sciences (SCI), Applied Physics, Nanostructure Physics.ORCID iD: 0000-0003-2339-1692
2009 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

The present invention provides a device that improves the performance of MRAM by eliminating the requirement for external fields or STT during the write operation. This is accomplished by a special design of the magnetic storage tri-layer of the memory element, in which the three magnetic layers have different magnetic ordering temperatures, whereas the middle layer has lowest ordering temperature, whereas further the two outer layers have different ordering temperatures. The outer layers have different magnetic anisotropy such that one outer layer switches in a lower field than the other outer layer. Upon heating the sandwich from the base operating temperature, typically room temperature, the storage layer switches under a combined action of the intrinsic exchange and dipole fields controlled by the thermal effect of a two-step current pulse trough the device. The read out of the magnetization direction of the storage tri-layer is achieved by the conventional means of magneto-resistive sensing, which utilizes a nonmagnetic spacer and a magnetic reference layer in series with the storage layer.

Place, publisher, year, edition, pages
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-80610OAI: diva2:496534
WO 2011078776A1

QS 2015

Available from: 2012-02-10 Created: 2012-02-10 Last updated: 2015-01-20Bibliographically approved

Open Access in DiVA

No full text

Other links

Search in DiVA

By author/editor
Korenivski, Vladislav
By organisation
Nanostructure Physics
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 35 hits
ReferencesLink to record
Permanent link

Direct link