Abstract:It is difficult to perform 2-D imaging of elastic properties using the Brillouin scattering technique because the weak thermal phonon signal in the sample leads to low measurement accuracy and long measurement times. To improve the phonon signal, we artificially induced acoustic phonons using a ScAlN thin-film piezoelectric transducer, which has a giant piezoelectricity. The film was grown using RF magnetron sputtering of a ScAl alloy target on a silica glass bar sample. Using a microwave probe, the electric p… Show more
“…ScAlN has excellent acoustic properties, such as high sound velocity and large sound attenuation. [78][79][80][81] It is commonly utilized in ultrasound, surface acoustic waves, and several other applications. ScAlN also offers notable benefits in terms of high temperature stability, chemical stability, mechanical strength, and other aspects.…”
Section: Differentiating Characteristics Of Scaln In Comparison To Co...mentioning
The research found that after doping with rare earth elements, a large number of electrons and holes will be produced on the surface of AlN, which makes the material have the characteristics of spontaneous polarization.
“…ScAlN has excellent acoustic properties, such as high sound velocity and large sound attenuation. [78][79][80][81] It is commonly utilized in ultrasound, surface acoustic waves, and several other applications. ScAlN also offers notable benefits in terms of high temperature stability, chemical stability, mechanical strength, and other aspects.…”
Section: Differentiating Characteristics Of Scaln In Comparison To Co...mentioning
The research found that after doping with rare earth elements, a large number of electrons and holes will be produced on the surface of AlN, which makes the material have the characteristics of spontaneous polarization.
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