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Infrared absorption from ions adjacent to lithium acceptors in hydrothermally grown ZnO
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View: Figures


Image of FIG. 1.
FIG. 1.

Infrared absorption spectrum from a hydrothermally grown ZnO crystal, taken at using a polarizer. The electric field of the measuring light was oriented parallel to the axis . The peak of the band occurs at . This band cannot be observed when the polarizer is rotated to .

Image of FIG. 2.
FIG. 2.

Temperature dependence of the peak position of the dominant band in a hydrothermally grown ZnO crystal.

Image of FIG. 3.
FIG. 3.

Temperature dependence of the width of the band (measured at the half-maximum points).

Image of FIG. 4.
FIG. 4.

EPR spectrum of the axial neutral lithium acceptor. These data were taken at during exposure to laser light. The magnetic field was perpendicular to the axis.

Image of FIG. 5.
FIG. 5.

Possible models for the lithium-associated ion in hydrothermally grown ZnO. In each case, the lithium ion occupies a zinc site. (a) The ion is on the nearest axial nonbonding oxygen site with the proton facing the lithium. (b) The ion is on the nearest axial bonding oxygen site with the proton extending out opposite the lithium. (c) The proton occupies a bond-center position immediately adjacent to the lithium. An expected lattice distortion of the lithium is not shown in this last model.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Infrared absorption from OH− ions adjacent to lithium acceptors in hydrothermally grown ZnO