Nanoscale Microstructure and Magnetic Transport in AIN/Co/AIN/Co… Discontinuous Multilayers

Magnetic states of discontinuous Co80Fe20Al2O3 Multilayers

Discontinuous metal–insulator multilayers [Co80Fe20(t)/Al2O3(3 nm)]n were studied by SQUID magnetometry and AC susceptometry. CoFe forms ferromagnetic particles in the Al2O3 matrix. In this paper, we focus on the field dependence of the AC susceptibility of samples with t 1⁄4 1:3 nm. We find strong evidence for transitions from a superparato a superferromagnetic and, finally, to a reentrant sup...

Effect of interfacial microstructure on magnetic properties of dysprosium multilayers

Two Problems in Spin-dependent Transport in Metallic Magnetic Multilayers

Transport properties of magnetic multilayers in current perpendicular to the plane of the layers geometry are defined by diffusive scattering in the bulk of the layers, and diffusive and ballistic scattering across the interfaces. Due to the short screening length in metals, layer by layer treatment of the multilayers is possible, when the macroscopic transport equation (Boltzmann equation or d...

Temperature and ion irradiation dependence of magnetic domains and microstructure in CoÕPt multilayers

Microstructure and magnetic properties of Co/Pt multilayers with perpendicular anisotropy were studied as a function of growth temperature (TG) and ion irradiation. With increased TG , larger columnar grain size and an improved ^111& texture were observed. Up to a critical temperature (Tcrit) , a monotonic increase in coercivity (HC) with TG was measured, followed by a decrease in HC with furth...

Programmable nanoscale domain patterns in multilayers

The pattern formation in systems with multiple layers of adsorbate molecules is studied. We consider the presence of two types of molecules in each layer, which are characterized by different dipole moments. The patterns are characterized by the non-uniform distribution of the two molecules. A phase field model is developed to simulate the molecular motion and patterning under the combined acti...