Quenching of Giant Hysteresis Effects in La12zYzHx Switchable Mirrors

Structural, electrical, and optical properties of La1ÀzYzHx switchable mirrors

Thin La12zYzHx films, in the composition range 0,z,1 and 0,x,3, are studied using x-ray diffraction, dc resistivity measurements, reflectance-transmittance measurements, and ellipsometry in the visible and nearinfrared spectral range. For x50 the structural phase diagram is similar to that of the bulk system. Upon hydrogen absorption and desorption, the La12zYzHx films do not disproportionate. ...

Switchable silver mirrors with long memory effects† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c4sc01912a Click here for additional data file. Click here for additional data file.

Hysteresis in YH x films observed with in situ measurements

Giant hysteretic effects in the YHx hydrogen switchable mirror system are observed between x51.9 and x53 in pressure composition isotherms, optical and electrical properties, and mechanical stress. Polycrystalline Y films are studied by simultaneous in situ measurements of electrical resistivity, optical transmittance and x-ray diffractometry. These experiments are linked to optical microscopy ...

Effect of hydrogen-switchable mirrors on the Casimir force.

We present systematic measurements of the Casimir force between a gold-coated plate and a sphere coated with a hydrogen-switchable mirror. Hydrogen-switchable mirrors are shiny metals that can become transparent upon hydrogenation. Despite such a dramatic change of the optical properties of the sphere, we did not observe any significant decrease of the Casimir force after filling the experiment...

Isotope Effects in Switchable Metal-Hydride Mirrors

Measurements of optical reflectance, transmittance, and electrical resistivity on the switchable mirror systems YHx and YDx show that the absorption of hydrogen induces the same variations as that of deuterium. In both cases there is a weak transparency window for the metallic dihydride (dideuteride) phase and a yellowish transparency in the insulating trihydride (trideuteride) phase. The sligh...