Abstract
High-pressure diffraction experiments for wurtzite-type zinc magnesium selenide were performed using a large-anvil X-ray diffraction press, MAX80, and synchrotron radiation. The pressure dependence of unit-cell parameters was determined for Zn0.53Mg0.47Se for pressures ranging up to 5.17GPa. The value of bulk modulus and its pressure derivative were calculated from the pressure–volume dependence by fitting the Birch–Murnaghan equation of state (EOS). They are compared with reported data for ZnSe, MgSe and some related solid solutions. Photoluminescence (PL) data for Zn0.38Mg0.62Se were collected using a diamond-anvil cell at a lower pressure. These data show an evolution of the main deep-levels emission band: a narrowing of the spectrum, an increase of luminescence intensity and a blue shift.
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