Thin Solid Films, Vol.515, No.11, 4819-4825, 2007
Deposition characterization of reactive magnetron sputtered aluminum nitride thin films for film bulk acoustic wave resonator
This work studies the relationship between the deposition process parameters and the properties of sputtered c-axis-oriented aluminum nitride (AIN) thin films. AIN films were deposited on a Pt electrode by reactive magnetron sputtering under various deposition conditions. The films were characterized by X-ray diffraction (XRD) and field-emission scanning electron microscopy (FESEM). A polycrystalline AIN film with highly c-axis-preferred orientation was achieved. The XRD rocking curve was 2.7 degrees. The FESEM photographs also show that the AIN film has a dense hexagonal surface texture with uniform grain size and a highly ordered column structure. (c) 2007 Elsevier B.V. All rights reserved.
Keywords:aluminum nitride;radio frequency sputter