Abstract: A heat assisted magnetic recording (HAMR) write head contains a main pole, a waveguide, and a near-field transducer containing an antenna disposed between the waveguide and the main pole. A first portion of the antenna includes a layer stack of three or more gold-based component layers that contain a waveguide-side outermost gold-based component layer, a pole-side outermost gold-based component layer, and one or more intermediate gold-based component layers. An intermediate gold-based component layer of the one or more intermediate gold-based component layers includes at least one platinum group metal (PGM) at a maximum total atomic percentage that is greater than a total atomic percentage of the at least one PGM in the waveguide-side outermost gold-based component layer and is greater than a total atomic percentage of the at least one PGM in the pole-side outermost gold-based component layer.

Abstract: A heat-assisted magnetic recording medium has a heat-sink layer, a chemically-ordered FePt alloy magnetic layer and a perovskite oxide intermediate layer between the heat-sink layer and the magnetic layer. The perovskite oxide intermediate layer may function as both a seed layer for the magnetic layer and a thermal barrier layer, as just a seed layer for the magnetic layer, or as just a thermal barrier layer. The intermediate layer is formed of a material selected from a ABO3 perovskite oxide (where A is selected from one or more of Ba, Sr and Ca and B is selected from one or more of Zr, Ce, Hf, Sn, Ir, and Nb), and a A2REBO6 rare earth double perovskite oxide (where RE is a rare earth element, A is selected from Ba, Sr and Ca, and B is selected from Nb and Ta).

Abstract: A method for making a superconducting article includes the steps of providing a biaxially textured substrate. A seed layer is then deposited. The seed layer includes a double perovskite of the formula A2B?B?O6, where A is rare earth or alkaline earth metal and B? and B? are different rare earth or transition metal cations. A superconductor layer is grown epitaxially such that the superconductor layer is supported by the seed layer.

Abstract: A superconducting article includes a substrate having a biaxially textured surface. A biaxially textured buffer layer, which can be a cap layer, is supported by the substrate. The buffer layer includes a double perovskite of the formula A2B?B?O6, where A is rare earth or alkaline earth metal and B? and B? are different transition metal cations. A biaxially textured superconductor layer is deposited so as to be supported by the buffer layer. A method of making a superconducting article is also disclosed.

Abstract: An article includes a substrate having a surface and a nanofence supported by the surface. The nanofence includes a multiplicity of primary nanorods and branch nanorods, each of the primary nanorods being attached to said substrate, and each of the branch nanorods being attached to a primary nanorods and/or another branch nanorod. The primary and branch nanorods are arranged in a three-dimensional, interconnected, interpenetrating, grid-like network defining interstices within the nanofence. The article further includes an enveloping layer supported by the nanofence, disposed in the interstices, and forming a coating on the primary and branch nanorods. The enveloping layer has a different composition from that of the nanofence and includes a radial p-n single junction solar cell photovoltaic material and/or a radial p-n multiple junction solar cell photovoltaic material.

Abstract: A superconducting article includes a substrate having a biaxially textured surface. A biaxially textured buffer layer, which can be a cap layer, is supported by the substrate. The buffer layer includes a double perovskite of the formula A2B?B?O6, where A is rare earth or alkaline earth metal and B? and B? are different transition metal cations. A biaxially textured superconductor layer is deposited so as to be supported by the buffer layer. A method of making a superconducting article is also disclosed.

Abstract: A method for making a superconducting article includes the steps of providing a biaxially textured substrate. A seed layer is then deposited. The seed layer includes a double perovskite of the formula A2B?B?O6, where A is rare earth or alkaline earth metal and B? and B? are different rare earth or transition metal cations. A superconductor layer is grown epitaxially such that the superconductor layer is supported by the seed layer.

Abstract: A thin film structure for photovoltaic applications includes a biaxially textured metal substrate; a seed layer epitaxially disposed on the metal substrate; a barrier layer comprising SrTiO3 epitaxially disposed on the seed layer; a cap layer comprising ?-Al2O3 epitaxially disposed on the SrTiO3 barrier layer; and a crystalline silicon layer epitaxially disposed on the cap layer, where the cap layer comprises a volume fraction of biaxial texture of at least about 80% and the crystalline silicon layer does not include a metal silicide phase.

Abstract: A superconducting article includes a substrate having a biaxially textured surface, and an epitaxial biaxially textured superconducting film supported by the substrate. The epitaxial superconducting film includes particles of Ba2RENbO6 and is characterized by a critical current density higher than 1 MA/cm2 at 77K, self-field. In one embodiment the particles are assembled into columns. The particles and nanocolumns of Ba2RENbO6 defects enhance flux pinning which results in improved critical current densities of the superconducting films. Methods of making superconducting films with Ba2RENbO6 defects are also disclosed.

Abstract: A simple and controlled method to fabricate a 3D, epitaxial, biaxially textured nanofence comprised of single crystalline MgO nanobelt segments or links that grew both vertically and horizontally along <100> directions of the (100) STO substrate was developed. Continuous supply of Ni catalyst during the co-laser ablation of MgO and Ni metal led to the growth of nanobelts with such a unique morphology. Individual single crystalline MgO nanobelts had a square cross-section with high aspect ratios. X-ray diffraction results obtained from an entire MgO nanofence layer confirmed that MgO nanofence had epitaxial relation with STO substrate of [100]MgO?[100]STO. Such oxide nanofences can be used as a 3D biaxially-textured nanotemplate for epitaxial growth of wide-ranging, 3D, electronic, magnetic and electromagnetic nanodevices.

Abstract: A superconducting article includes a substrate having a biaxially textured surface, and an epitaxial biaxially textured superconducting film supported by the substrate. The epitaxial superconducting film includes particles of Ba2RETaO6 and is characterized by a critical current density higher than 1 MA/cm2 at 77K, self-field. In one embodiment the particles are assembled into columns. The particles and nanocolumns of Ba2RETaO6 defects enhance flux pinning which results in improved critical current densities of the superconducting films. Methods of making superconducting films with Ba2RETaO6 defects are also disclosed.