  Hydrogen release behavior from mixed-perovskite oxide, yttrium and cobalt
doped barium-zirconate, BaZr$_{0.955}$Y$_{0.03}$Co$_{0.015}$O$_{3-a}$ (BZYC)
exposed to D$_2$ or D$_2$O atmosphere was studied by thermal desorption
spectroscopy (TDS) detecting deuterium gas (D$_2$) and heavy water vapor
(D$_2$O) separately. The release of hydrogen appeared at around 1000 K.
Hydrogen solubility was higher in the BZYC sample exposed to the D$_2$O.
