Anisotropic piezoelectric response of ion beam sputtered aluminum nitride thin films textured along [101¯0]-axis: A field dependent X-ray diffraction investigation

2018 ◽  
Vol 452 ◽  
pp. 299-305
Author(s):  
Neha Sharma ◽  
S. Ilango
1995 ◽  
Vol 388 ◽  
Author(s):  
J.H. Edgar ◽  
C.R. Eddy ◽  
J.A. Sprague ◽  
B.D. Sartwell

AbstractAnalysis of the phase behavior, structure, and composition of aluminum nitride thin films with up to 22% boron prepared by ion-beam assisted deposition is presented. the c-lattice constant of the film decreased with increasing boron content as expected from the formation of an aIN - wurtzite BN alloy. there was no evidence for separate boron nitride precipitation from either X-ray diffraction or FTIR. IN contrast, auger electron spectroscopy of the boron present in the films suggested that two types of boron bonding was present.


Vacuum ◽  
1994 ◽  
Vol 45 (4) ◽  
pp. 441-446 ◽  
Author(s):  
FC Stedile ◽  
FL Freire ◽  
WH Schreiner ◽  
IJR Baumvol

2005 ◽  
Vol 892 ◽  
Author(s):  
Qianghua Wang ◽  
Jianzeng Xu ◽  
Changhe Huang ◽  
Gregory W Auner

AbstractThis paper reports the fabrication and characterization of micromachined ultrasonic transducers (MUT) based on piezoelectric aluminum nitride (AlN) thin films. The MUT device is composed of an Al/AlN/Al sandwiched structure overlaid on top of a silicon (Si) diaphragm. X-ray diffraction (XRD) scan shows that highly c-axis oriented AlN (002) thin films have been grown on Al/Si(100) substrates. Electrical impedance of the MUT devices is analyzed as a function of frequency. The fundamental resonant frequencies of the devices are found in the range of 65-70 kHz, which are in approximation to the theoretical calculation. The effective coupling factors of the devices are also derived as 0.18.


1992 ◽  
Vol 242 ◽  
Author(s):  
W. J. Meng ◽  
T. A. Perry ◽  
J. Heremans ◽  
Y. T. Cheng

ABSTRACTThin films of aluminum nitride were grown epitaxially on Si(111) by ultra-high-vacuum dc magnetron reactive sputter deposition. Epitaxy was achieved at substrate temperatures of 600° C or above. We report results of film characterization by x-ray diffraction, transmission electron microscopy, and Raman scattering.


1990 ◽  
Vol 201 ◽  
Author(s):  
Kevin M. Hubbard ◽  
Nicole Bordes ◽  
Michael Nastasi ◽  
Joseph R. Tesmer

AbstractWe have investigated the fabrication of thin-film superconductors by Cu-ion implantation into initially Cu-deficient Y(BaF2)Cu thin films. The precursor films were co-evaporated on SrTiO3 substrates, and subsequently implanted to various doses with 400 keV 63Cu2+. Implantations were preformed at both LN2 temperature and at 380°C. The films were post-annealed in oxygen, and characterized as a function of dose by four-point probe analysis, X-ray diffraction, ion-beam backscattering and channeling, and scanning electron microscopy. It was found that a significant improvement in film quality could be achieved by heating the films to 380°C during the implantation. The best films became fully superconducting at 60–70 K, and exhibited good metallic R vs. T. behavior in the normal state.


2016 ◽  
Vol 603 ◽  
pp. 29-33 ◽  
Author(s):  
A. Davydok ◽  
T.W. Cornelius ◽  
C. Mocuta ◽  
E.C. Lima ◽  
E.B. Araujo ◽  
...  

2006 ◽  
Vol 88 (16) ◽  
pp. 161915 ◽  
Author(s):  
A. Sanz-Hervás ◽  
M. Clement ◽  
E. Iborra ◽  
L. Vergara ◽  
J. Olivares ◽  
...  

2021 ◽  
Author(s):  
Asmat Ullah ◽  
Muhammad Usman ◽  
Muhammad Maqbool

Abstract Er doped Aluminum Nitride (AlN) thin films were prepared using magnetron sputtering technique in a Nitrogen (N) atmosphere on a Silicon substrate. The samples were annealed at a temperature of 900 0C. The fabricated specimen was irradiated with proton dose of 1×1014 ions/cm2 with incident energy of 335 keV using ions accelerators. The relative concentration, thickness and structural properties of the thin films were determined by Rutherford Backscattering Spectroscopy (RBS) and X-Ray Diffraction (XRD) respectively. Before and after the irradiation the energy levels for their types of bonding existing in our specimens were traced with Fourier Transform Infrared Spectroscopy (FTIR).


1992 ◽  
Vol 275 ◽  
Author(s):  
M. Narbutovskih ◽  
J. Rosner ◽  
P. Merchant ◽  
R. D. Jacowitz

ABSTRACTThis paper reports on the processes used to achieve low resistance silver contacts to YBCO thin films that have either c-axis or a-axis orientation. Characterization by x-ray diffraction and TEM verified that these films are highly oriented with either the a or the c axis oriented perpendicular to the substrate surface. TEM examination of some of the Ag/YBCO interfaces reveals the presence of an amorphous layer. We will describe the effects of ion beam etching and RTA alloying on the contact resistivity for both orientations.


2001 ◽  
Vol 697 ◽  
Author(s):  
Hisayuki Suematsu ◽  
Tsuyoshi Saikusa ◽  
Tsuneo Suzuki ◽  
Weihua Jiang ◽  
Kiyoshi Yatsui

AbstractThin films of titanium iron (TiFe) were prepared by a pulsed ion-beam evaporation (IBE) method. A pulsed ion beam of proton accelerated at 1 MV (peak) with a pulse width of 50 ns and a current of 70 kA was focused on TiFe alloy targets. Soda lime glass substrates were placed in front of the targets. Phases in the thin films were identified by X-ray diffraction (XRD). XRD results revealed that the thin films deposited on the glass substrates consist of a TiFe phase. Crystallized Ti-Fe thin films without oxides were successfully obtained. Surface roughness of the thin film was 0.16 m m.


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