Switchable mirrors based on nickel-magnesium films

Richardson, T. J.; Slack, J. L.; Armitage, R. D.; Kostecki, R.; Farangis, B.; Rubin, M. D.
May 2001
Applied Physics Letters;5/14/2001, Vol. 78 Issue 20, p3047
Academic Journal
An electrochromic mirror electrode based on reversible uptake of hydrogen in nickel magnesium alloy films is reported. Thin, magnesium-rich Ni-Mg films prepared on glass substrates by co-sputtering from Ni and Mg targets are mirror-like in appearance and have low visible transmittance. Upon exposure to hydrogen gas or on cathodic polarization in alkaline electrolyte, the films take up hydrogen and become transparent. When hydrogen is removed, the mirror properties are recovered. The transition is believed to result from reversible formation of Mg[sub 2]NiH[sub 4] and MgH[sub 2]. A thin overlayer of palladium was found to enhance the kinetics of hydrogen insertion and extraction, and to protect the metal surface against oxidation. © 2001 American Institute of Physics.


Related Articles

  • Magnetic and electric "dead" layers in (La0.7Sr0.3)MnO3 thin films. Borges, R. P.; Guichard, W.; Lunney, J. G.; Coey, J. M. D.; Ott, F. // Journal of Applied Physics;4/1/2001, Vol. 89 Issue 7 

    The magnetic, transport, and structural properties of (La[sub 0.1]Sr[sub 0.3])MnO[sub 3] films deposited on MgO (001) are reported as a function of thickness and substrate temperature. The substrate temperature is fundamental in determining the structural properties and a deviation from the...

  • Structure and superconducting properties of sputtered Gd-Ba-Cu-O thin films. Kamada, Takeshi; Setsune, Kentaro; Hirao, Takashi; Wasa, Kiyotaka // Applied Physics Letters;5/16/1988, Vol. 52 Issue 20, p1726 

    Superconducting Gd-Ba-Cu-O thin films were deposited on MgO substrates by rf magnetron sputtering. Preparation temperature dependence on the crystallization behavior and on the superconductive properties of this film have been investigated in correlation with the target-substrate spacing. A...

  • New 100 K TlSr[sub 2](Ca,Cr)Cu[sub 2]O[sub 7] superconducting films. Tang, Y.Q.; Sheng, Z.Z. // Applied Physics Letters;6/15/1992, Vol. 60 Issue 24, p3057 

    Reports the preparation and characterization of TlSr[sub 2](Ca,Cr)Cu[sub 2]O[sub 7] superconducting thin films on magnesium oxide(100) substrates. Deposition of films via spray pyrolysis and thallium diffusion; Application of a Sloan Dektak surface profilemeter to measure film thickness;...

  • Electrical properties of MgO insulating layers in spin-dependent tunneling junctions using Fe[sub3]O[sub4]. Kiyomura, T.; Maruo, Y.; Gomi, M. // Journal of Applied Physics;10/15/2000, Vol. 88 Issue 8, p4768 

    Investigates the growth conditions and electrical properties MgO epitaxial thin films, which have potential applications as insulating layers for spin-dependent tunneling devices where Fe[sub 3]O[sub 4] as one of the magnetic electrodes. Growing of epitaxial MgO films with high crystalline...

  • Preparation of epitaxial Pb(ZrxTi1-x)O3 thin films and their crystallographic, pyroelectric, and ferroelectric properties. Takayama, Ryoichi; Tomita, Yoshihiro // Journal of Applied Physics;2/15/1989, Vol. 65 Issue 4, p1666 

    Presents a study in which epitaxial lead zirconate-titanate (PZT) thin films with the tetragonal and rhombohedral structures were obtained MgO single crystals and epitaxial platinum films. Properties of thin films; Composition of the films; Pyroelectric currents detected on PZT films.

  • Preferred orientation effects in coevaporated films of DyBa2Cu3O7-x superconductors. Budhani, R. C.; Xu, Youwen; Wiesmann, H.; Ruckman, M. W.; Sabatini, R. L. // Journal of Applied Physics;11/15/1989, Vol. 66 Issue 10, p4896 

    Deals with a study which investigated the effect of thermal coevaporation on deposit superconducting thin films on magnesium oxide substrates. Information on superconducting thin films; Methodology of the study; Results and discussion.

  • Magnetic properties of Co/MgO multilayered films. Nishikawa, Masakazu; Kita, Eiji; Erata, Tomoki; Tasaki, Akira // Journal of Applied Physics;5/15/1993, Vol. 73 Issue 10, p6350 

    Presents a study which fabricated multilayered thin films composed of cobalt (Co) and MgO layers with an ultrahigh vacuum deposition technique. Film structures; Magnetization measurements; Angle x-ray scattering patterns for Co/MgO multilayered thin films.

  • Y[sub 1]Ba[sub 2]Cu[sub 3]O[sub 7]/MgO/Y[sub 1]Ba[sub 2]Cu[sub 3]O[sub 7] edge Josephson junctions. Robertazzi, R.P.; Koch, R.H. // Applied Physics Letters;8/10/1992, Vol. 61 Issue 6, p711 

    Demonstrates the fabrication of YBCO weak links using thin sputtered films of magnesium oxide to form a weak link region between junction electrodes. Applicability of the resistively junction equation; Importance of edge cleaning; Implications of device quality improvements for electrode...

  • Reproducible growth of high quality YBa[sub 2]Cu[sub 3]O[sub 7-x] film on (100) MgO with a.... Cheung, Jeffrey T.; Gergis, Isoris // Applied Physics Letters;6/22/1992, Vol. 60 Issue 25, p3180 

    Examines the growth of YBa[sub 2]Cu[sub 3]O[sub 7-x] (YBCO) thin films on SrTio[sub 3]-buffered (100) magnesium oxide (MgO) substrates by pulse laser deposition. Assistance of the SrTiO[sub 3] layer to the films; Interaction between YBCO and MgO; Exhibition of the film structural, electrical...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics