Volume 108, Issue 4, 15 August 2010
Index of content:
108(2010); http://dx.doi.org/10.1063/1.3462394View Description Hide Description
The nature of intrinsic defects in ZnOfilmsgrown by metal organic vapor phase epitaxy was studied by positron annihilation and photoluminescence spectroscopy techniques. The supply of Zn and O during the film synthesis was varied by applying different growth temperatures , affecting decomposition of the metal organic precursors. The microscopic identification of vacancy complexes was derived from a systematic variation in the defect balance in accordance with Zn/O supply trends.
108(2010); http://dx.doi.org/10.1063/1.3474662View Description Hide Description
The spin precession cone angle in a wide Py microstrip has been investigated systematically from the linear to the nonlinear regime. At low power excitations, the cone angle increases linearly with the amplitude of the microwavemagnetic field. However, when exceeds a critical value, a foldover resonance lineshape shows up, and the precession cone angle starts to increase with . The maximum cone angle reported in the present study reaches 22°.