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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1109/TUFFC.2011.1881
|2 doi
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|a pubmed25n0692.xml
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|a (NLM)21507766
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|a eng
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|a Yu, Fapeng
|e verfasserin
|4 aut
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|a Dielectric and electromechanical properties of rare earth calcium oxyborate piezoelectric crystals at high temperatures
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 23.08.2011
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|a Date Revised 21.04.2011
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|a published: Print
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|a Citation Status MEDLINE
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|a © 2011 IEEE
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|a The electrical resistivity, dielectric, and electromechanical properties of ReCa(4)O(BO(3))(3) (ReCOB; Re = Er, Y, Gd, Sm, Nd, Pr, and La) piezoelectric crystals were investigated as a function of temperature up to 1000 °C. Of the studied crystals, ErCOB and YCOB were found to possess extremely high resistivity (p): p > 3 × 10(7) ω.cm at 1000 °C. The property variation in ReCOB crystals is discussed with respect to their disordered structure. The highest electromechanical coupling factor κ(26) and piezoelectric coefficient d(26) at 1000°C, were achieved in PrCOB crystals, with values being on the order of 24.7% and 13.1 pC/N, respectively. The high thermal stability of the electromechanical properties, with variation less than 25%, together with the low dielectric loss (<46%) and high mechanical quality factor (>1500) at elevated temperatures of 1000 °C, make ErCOB, YCOB, and GdCOB crystals promising for ultrahigh temperature electromechanical applications
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|a Letter
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Borates
|2 NLM
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|a Calcium Compounds
|2 NLM
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|a Metals, Rare Earth
|2 NLM
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1 |
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|a Zhang, Shujun
|e verfasserin
|4 aut
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|a Zhao, Xian
|e verfasserin
|4 aut
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|a Yuan, Duorong
|e verfasserin
|4 aut
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|a Qin, Lifeng
|e verfasserin
|4 aut
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|a Wang, Qing-Ming
|e verfasserin
|4 aut
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|a Shrout, Thomas R
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t IEEE transactions on ultrasonics, ferroelectrics, and frequency control
|d 1986
|g 58(2011), 4 vom: 02. Apr., Seite 868-73
|w (DE-627)NLM098181017
|x 1525-8955
|7 nnns
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| 773 |
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|g volume:58
|g year:2011
|g number:4
|g day:02
|g month:04
|g pages:868-73
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|u http://dx.doi.org/10.1109/TUFFC.2011.1881
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