English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The perpendicular shape anisotropy-spin transfer torque-magnetic randomaccess memories (PSASTT-MRAMs) takes advantage of the nanopillar free-layergeometry for securing a good thermal stability factor from the shape anisotropyof the nanomagnet. Such a concept is particularly well-suited for smalljunctions down to a few nanometers. At such a volume size, the nanopillar canbe effectively modeled as a Stoner-Wohlfarth (SW) particle, and the shapeanisotropy scales with the spontaneous magnetization by ~ Ms^2. For almost allferromagnets, Ms is a strong function of temperature, therefore, thetemperature-dependent shape anisotropy is an important factor to be consideredin any modeling of the temperature-dependent performance of PSA-STT-MRAMs. Inthis work, we summarize and discuss various possible temperature-dependentcontributions to the thermal stability factor and coercivity of thePSA-STT-MRAMs by modeling and comparing different temperature scaling andparameters. We reveal nontrivial corrections to the thermal stability factor byconsidering both temperature-dependent shape and interfacial anisotropies. Thecoercivity, blocking temperature, and electrical switching characteristics thatresulted from incorporating such a temperature dependence are also discussed,in conjugation with the nanomagnet dimension and coherence volume.

On the Temperature-dependent Characteristics of Perpendicular Shape Anisotropy-Spin Transfer Torque-Magnetic Random Access Memories (PSA-STT-MRAMs)