Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/403
Title: Samarium and manganese-doped lead titanate ceramic fiber/epoxy 1-3 composite for high-frequency transducer application
Authors: Li, Kun
Chan, Helen L. W.
Choy, Chung-loong
Subjects: Ultrasonic imaging
Piezoelectric ceramics
Piezoelectric transducers
Issue Date: Oct-2003
Publisher: IEEE
Source: IEEE transactions on ultrasonics, ferroelectrics, and frequency control, Oct. 2003, v. 50, no. 10, p.1371-1376
Abstract: Samarium- (Sm) and manganese- (Mn) doped lead titanate ceramic fibers with a diameter of 35 μm were prepared using a sol-gel method. The X-ray diffraction pattern shows that the fibers have a pure perovskite structure. The 1-3 composite disks with a thickness of 31-41 μm and with ceramic volume fraction of ∼0.68 have been prepared using the samarium and manganese doped lead titanate (PSmT) fibers. The resonance characteristics of the poled composite disks were measured. A focused transducer was fabricated using a concave 1-3 composite disk with nonuniform thickness in order to enhance its bandwidth. The insertion loss (IL), pulse-echo response and frequency spectrum of the composite transducer were measured. The center frequency of the transducer was ∼31 MHz with a -3 dB bandwidth of ∼123% and a low IL of 29.3 dB.
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Type: Journal/Magazine Article
URI: http://hdl.handle.net/10397/403
DOI: 10.1109/TUFFC.2003.1244754
ISSN: 0885-3010
Appears in Collections:MRC Journal/Magazine Articles
AP Journal/Magazine Articles

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