We report that in BaTiO3:Rh the carrier-type depends not only on the postprocessing condition but also on the incident wavelength in two beam coupling. Carriers are the holes for the as-grown sample, and change to electrons for the sample reduced in the atmosphere of 10-14atm oxygen partial pressure. However, for the sample reduced in the atmosphere of 10-10atm oxygen partial pressure, the carrier is an electron for the incident wavelength of 514 nm, and a hole for 633 nm. Its absorption, photoinduced absorption, and two beam coupling are investigated and discussed.
|Number of pages||3|
|Journal||Applied Physics Letters|
|State||Published - 1998|