Centre National De La Recherche Scientifique

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Université Joseph Fourier

Crocus-Technology Sa

Crocus Technology Inc.

Université Joseph Fourier - Grenoble

Sébastien Bandiera

Bernard Dieny

Ioan Lucian Prejbeanu

Quentin Stainer

Bernard Rodmacq

Hélène Bea

A voltage-controlled spintronic device includes a magnetic layer having an effective anisotropy Keff; a non-magnetic insulating layer; a contact layer; the magnetic layer having an anisotropy switching threshold such that application of a polarization voltage Vmax allows switching of the effective anisotropy Kfrom a direction perpendicular to the reference plane to a direction in the reference plane or vice versa, the magnetic layer including a first layer, with thickness t, having a volume anisotropy K; a second layer, with thickness t, having a surface anisotropy Kand a volume anisotropy K; the surface anisotropy Kand the volume anisotropies Kand Krespecting, over a given operating temperature range: Min(K(V=0), K(V=Vmax))&#x3c;&#x2212;{Kt+Kt)&#x3c;Max(K(V=0), K(V=Vmax)). K(V=0) is the surface anisotropy when no polarization voltage is applied. K(V=Vmax) is the surface anisotropy when a polarization voltage Vis applied.

Voltage-controlled magnetic device operating over a wide temperature range

Growing community of inventors

Corenc, France

Sébastien Bandiera