TITLE

Langasite for high-temperature bulk acoustic wave applications

AUTHOR(S)
Fritze, H.; Tuller, H. L.
PUB. DATE
February 2001
SOURCE
Applied Physics Letters;2/12/2001, Vol. 78 Issue 7, p976
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Langasite (La[sub 3]Ga[sub 5]SiO[sub 14]) and related compounds are promising candidates for high-temperature piezoelectric applications. To determine the stable operation of langasite as a high-temperature bulk acoustic wave (BAW) resonator, we characterized electrical conductivity [σ[sub el]=1.56xexp(-1.07 eV/kT)S/cm] and oxygen diffusivity [D[sub ox][sup T]=5x10[sup -5] exp(-1.45 eV/kT)cm[sup 2]/s] up to elevated temperatures. Langasite was successfully operated up to 900 °C as a BAW resonator with an average mass sensitivity of about 0.17 μg Hz-1 cm-2. This enables, in principle, high-temperature monitoring of deposition rates and thermogravimetry with high sensitivity. © 2001 American Institute of Physics.
ACCESSION #
4710616

 

Related Articles

  • Characterization of micromachined piezoelectric PZT force sensors for dynamic scanning force... Chengkuo Lee; Itoh, Toshihiro; Maeda, Ryutaro; Suga, Tadatomo // Review of Scientific Instruments;May97, Vol. 68 Issue 5, p2091 

    Discusses the resonance frequency and quality factor of the Pb(Ti,Zr)O[sub 3] (PZT) microcantilevers, namely, effective Young's modulus and piezoelectric property of PZT layer of piezoelectric microcantilevers. Principle of operation; Resonance frequency and damping effects; Spring constants of...

  • Characterization of a thickness-shear mode quartz resonator with multiple nonpiezoelectric layers. Granstaff, Victoria Edwards; Martin, Stephen J. // Journal of Applied Physics;2/1/1994, Vol. 75 Issue 3, p1319 

    Presents a study that described a one-dimensional analysis of a piezoelectric resonator with multiple nonpiezoelectric layers of arbitrary thickness and complex shear modulus. Theory used in the study; Information on the limiting cases; Conclusions.

  • A Lanthanum�Strontium Manganite: HF Absorption Features in the 2�30 MHz Frequency Range. Berezin, V. A.; Baginskii, K. V.; Tulin, V. A.; Shulyatev, D. A.; Mukovskii, Ya. M. // Technical Physics Letters;Jan2001, Vol. 27 Issue 1, p25 

    The RF magnetic response of a La[sub 0.8]Sr[sub 0.2]MnO[sub 3] single crystal was studied in a frequency range from 2 to 30 MHz. The main contribution to the RF absorption in this range is related to the hysteresis losses. A new frequency-dependent anomaly in the HF absorption spectrum was...

  • Conductivity of La[sub 1 � ][sub x]Ca[sub x]MnO[sub 3] under Magnetic Resonance of Mn Ions. Laiho, R.; L�hderanta, E.; Vlasenko, L. S.; Vlasenko, M. P.; Zakhvalinskii, V. S. // Physics of the Solid State;Mar2001, Vol. 43 Issue 3, p489 

    A change in the electrical conductivity, s, is observed in the manganese perovskite La[sub 1-x]Ca[sub x]MnO[sub 3], with x = 0 and 0.3 under saturation of the magnetic resonance transitions of Mn ions. This effect has a maximum in the temperature range of the magnetic phase transition of the...

  • Coexistence of paramagnetic-charge-ordered and ferromagnetic-metallic phases in La[sub 0.5]Ca[sub 0.5]MnO[sub 3] evidenced by electron spin resonance. Rivadulla, F.; Freita-Alvite, M.; Lo´pez-Quintela, M. A.; Hueso, L. E.; Migue´ns, D. R.; Sande, P.; Rivas, J. // Journal of Applied Physics;1/15/2002, Vol. 91 Issue 2, p785 

    Throughout a complete electron spin resonance (ESR) and magnetization study of La[sub 0.5]Ca[sub 0.5]MnO[sub 3], we discuss about the nature of the complex phase-segregated state established in this compound below T∼ 210 K. Between T[sub N]... T... T[sub c], the ESR spectra shows two lines...

  • Surface-induced phase separation in manganites: A microscopic origin for powder magnetoresistance. Bibes, M.; Balcells, Ll.; Fontcuberta, J.; Wojcik, M.; Nadolski, S.; Jedryka, E. // Applied Physics Letters;2/10/2003, Vol. 82 Issue 6, p928 

    Through the analysis of the magnetic properties and of the nuclear magnetic resonance response of La[sub 2/3]Ca[sub 1/3]MnO[sub 3] ceramics with different grain sizes, we have found that poorly conducting regions, some ferromagnetic and some weakly magnetic, are located at the surface of the...

  • Electron paramagnetic resonance study of La[sub 0.7]Ca[sub 0.3-x]Ba[sub x]MnO[sub 3] lanthanum manganites. Ulyanov, A. N.; Yu, S. C.; Min, S. G.; Levchenko, G. G. // Journal of Applied Physics;5/15/2002 Part 1, 2 & 3, Vol. 91 Issue 10, p7926 

    Electron paramagnetic resonance (ESR) study of La[sub 0.7]Ca[sub 0.3-x]Ba[sub x]MnO[sub 3] manganites (x = 0; 0.15; 0.3) is presented. Experimentally observed exponential decreasing of line intensity on temperature is in agreement with the deduced one and indicates the spin-lattice relaxation in...

  • Spin dynamics of lanthanum metallofullerenes. Okubo, Shingo; Kato, Tatsuhisa // AIP Conference Proceedings;2001, Vol. 590 Issue 1, p469 

    Enormous variety of electron spin resonance (ESR) spectra of La...C[sub n]s was obtained in terms of g factor, hyperfine coupling constant, and line width. Line width of La...C[sub n]s (n = 80, 82, and 84) at various temperature was analyzed by the theory on the basis of the hydrodynamic...

  • Mini-motor runs with fewer parts. Sen, Philip // Engineer (00137758);5/31/2002, Vol. 291 Issue 7604, p10 

    Reports on the full-scale production of piezoelectric motor in Germany. Features of the motor designed by Elliptec; Background of the company; Applications of the technology; Outlook on miniature piezoelectric motors.

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics