Current-induced torques originating from earth-abundant 3d elements offer a promising avenue for low-cost and sustainable spintronic memory logic applications. Recently, orbital currents─transverse angular momentum flow in response to an electric field─have been the spotlight since they allow current-induced torque generation transition metals. Here, we report comprehensive study of spin Cu-based magnetic heterostructures. We show that high efficiencies can be achieved engineered Ni80Fe20/Cu...

We report the structural, magnetic, and interfacial spin transport properties of epitaxial terbium iron garnet (TbIG) ultrathin films deposited by magnetron sputtering. High crystallinity was achieved growing on gadolinium gallium substrates either at high temperatures, or room temperature followed thermal annealing, above 750 °C in both cases. The display large perpendicular magnetic anisotropy (PMA) induced compressive strain, tunable structural through growth conditions substrate lattice...

Very sensitive responses to external forces are found near phase transitions. However, transition dynamics and preequilibrium phenomena difficult detect control. We have observed that the equilibrium domain structure following a in ferroelectric ferroelastic BaTiO3 is attained by halving of periodicity multiple times. The process reversible, with doubling as temperature increased. This observation reminiscent period-doubling cascades generally during bifurcation phenomena, and, thus, it...

Current-induced torques originating from earth-abundant 3d elements offer a promising avenue for low-cost and sustainable spintronic memory logic applications. Recently, orbital currents -- transverse angular momentum flow in response to an electric field have been the spotlight since they allow current-induced torque generation transition metals. Here, we report comprehensive study of spin Cu-based magnetic heterostructures. We show that high efficiencies can be achieved engineered...

Abstract The Dzyaloshinskii‐Moriya interaction (DMI) is a chiral magnetic exchange promoting the perpendicular alignment of neighboring spins. DMI typically occurs in materials characterized by inversion asymmetry and strong spin‐orbit coupling, such as ferromagnetic/nonmagnetic metal (FM/NM) interfaces. microscopic origin this interfacial commonly described three‐site Levy–Fert model, where atomic moments interact through vicinal non‐magnetic atoms. Herein, evidence substantial arising from...

We present modeling and analysis of the so-called butterfly hysteresis behavior, based on use Preisach operator. The desired loop properties can be obtained under some mild conditions weighting function that defines proposed framework is used to model electric-field dependence strain in a piezoelectric material purposely designed exhibit asymmetric loops with remnant deformation.

Abstract Spintronics offers promising routes for efficient memory, logic, and computing technologies. The central challenge in spintronics is electrically manipulating detecting magnetic states devices. electrical control of magnetization via spin-orbit torques effective both conducting insulating layers. However, the readout latter inherently difficult, limiting their use practical applications. Here, we show magnetoresistive detection perpendicular reversal an ferrimagnet, terbium iron...

We present the conceptual design and initial development of hysteretic deformable mirror (HDM). The HDM is a completely new approach to operation mirrors (DMs) for wavefront correction in advanced imaging systems. key technology breakthrough application highly piezoelectric material combination with simple electrode layout efficiently define single actuator pixels. set-and-forget nature HDM, which based on large remnant deformation newly developed piezomaterial, facilitates use time division...

Abstract C a F e 2 O 4 is highly anisotropic antiferromagnet reported to display two spin arrangements with up–up–down–down (phase A) and up–down–up–down B) configurations. The relative stability of these phases ruled by the competing ferromagnetic antiferromagnetic interactions between 3+ spins arranged in different environments, but complete understanding magnetic structure this material does not exist yet. In study, we investigate epitaxial thin films grown on T i (110) substrates means...

Abstract CaFe 2 O 4 is a uniaxial antiferromagnet displaying two coexisting magnetic orderings, A and B, characterized by ↑↑↓↓ ↑↓↑↓ spin modulation, respectively, the emergence of net magnetization in limited temperature range, which not yet understood. The Hall magnetoresistance (SMR) probed at interface between Pt crystallographic domain structure thin film samples exploited to perform single‐ multi‐domain scale measurements. SMR response, upon rotating field along three orthogonal planes,...

Optical excitation perturbs the balance of phenomena selecting tilt orientation domain walls within ferroelectric thin films. The high carrier density induced in a low-strain BaTiO3 film by an above-bandgap ultrafast optical pulse changes angle that 90{\deg} a/c form with respect to substrate-film interface. dynamics are apparent time-resolved synchrotron x-ray scattering studies diffuse scattering. Tilting occurs at 298 K, temperature which a/b and phases coexist but is absent 343 K better...

We present the conceptual design and initial development of Hysteretic Deformable Mirror (HDM). The HDM is a completely new approach to operation deformable mirrors for wavefront correction in advanced imaging systems. key technology breakthrough application highly hysteretic piezoelectric material combination with simple electrode layout efficiently define single actuator pixels. set-and-forget nature HDM, which based on large remnant deformation newly developed piezo material, facilitates...

Abstract Patterns of ferroic domains and domain walls are being intensively studied to implement new logic schemes. Any technological application such objects depends on a detailed understanding them. Using low-temperature magnetic force measurements (10–300 K), the evolution ferromagnetic stripes equiatomic FePt thin films is thoroughly analyzed. Since known develop transition from in-plane homogeneous magnetization stripe upon varying its thickness, multiple samples demonstrating...

We report the structural, magnetic, and interfacial spin transport properties of epitaxial terbium iron garnet (TbIG) ultrathin films deposited by magnetron sputtering. High crystallinity was achieved growing on gadolinium gallium (GGG) substrates either at high temperature, or room temperature followed thermal annealing, above 750 °C in both cases. The display large perpendicular magnetic anisotropy (PMA) induced compressive strain, tunable structural through growth conditions substrate...

Patterns of ferroic domains and domain walls are being intensively studied to implement new logic schemes. Any technological application such objects depends on a detailed understanding them. This study analyzes patterns ferromagnetic stripes equiatomic FePt thin films at low temperatures. Since is known develop transition from in-plane homogeneous magnetization upon varying its thickness, multiple samples consider the critical value within analyzed range. Stripes' width demonstrates...

Spintronics offers promising routes for efficient memory, logic, and computing technologies. The central challenge in spintronics is electrically manipulating detecting magnetic states devices. electrical control of magnetization via spin-orbit torques effective both conducting insulating layers. However, the readout latter inherently difficult, limiting its use practical applications. Here, we demonstrate magnetoresistive detection perpendicular reversal an ferrimagnet, terbium iron garnet...

Incomplete cancellation of collinear antiparallel spins gives rise to ferrimagnetism. Even if the oppositely polarized are owing equal number a single magnetic element having same valence state, in principle, ferrimagnetic state can still arise from crystallographic inequivalence host ions. However, experimental identification such as is not straightforward because tiny magnitude expected for M and requirement sophisticated technique differentiate similar sites. We report synchrotron-based...

Incomplete cancellation of collinear antiparallel spins gives rise to ferrimagnetism. Even if the oppositely polarized are owing equal number a single magnetic element having same valence state, in principle, ferrimagnetic state can still arise from crystallographic inequivalence host ions. However, experimental identification such as ``ferrimagnetic'' is not straightforward because often tiny magnitude expected for $M$ and requirement sophisticated technique differentiate similar sites. We...