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Temperature dependent behaviors of electro-elastic properties of NdCa4O(BO3)3 crystal with monoclinic symmetry
文献摘要:
Rare-earth calcium oxyborate crystals(RECa4O(BO3)3,RECOB,RE:rare-earth elements)are a kind of multifunctional crystal materials.In this work,the temperature dependent behaviors of the electro-elastic constants of NdCOB crystal were investigated over the temperature range of-80-200℃,and their temperature coefficients were evaluated.It is found that NdCOB crystal possesses minimal variation of relative dielectric permittivities(<3%).The temperature coefficient of frequency for ZY cut with width shear vibration mode is in the order of 0.07×10-4/℃.The temperature coefficients of the elastic compliances are obtained to be in the range of-33.0 x 10-4/℃-32.2×10-4/℃.Particularly,the S44 and S66 were found to show low temperature coefficients of the elastic compliances,i.e.1.0×10-4/℃and-0.4×10-4/℃,respectively,indicating the existence of zero temperature coefficient of frequency crystal cut.Furthermore,the electromechanical coupling factors and piezoelectric coefficients as a function of temperature were studied.The electromechanical coupling factor k26 and piezoelectric co-efficient d26 are determined to be~30.8%and~15.2 pC/N at room temperature,respectively.The large piezoelectric response and zero temperature coefficient of frequency indicate the potential usage of NdCOB crystal for piezoelectric frequency devices over a wide temperature range.
文献关键词:
作者姓名:
Guiteng Yao;Feifei Chen;Fapeng Yu;Xian Zhao
作者机构:
State Key Laboratory of Crystal Materials,Center for Optics Research Engineering,Shandong University,Jinan 250100,China
引用格式:
[1]Guiteng Yao;Feifei Chen;Fapeng Yu;Xian Zhao-.Temperature dependent behaviors of electro-elastic properties of NdCa4O(BO3)3 crystal with monoclinic symmetry)[J].稀土学报(英文版),2022(11):1772-1777
A类:
NdCa4O,oxyborate,RECa4O,RECOB,NdCOB,permittivities,compliances,S44,S66,k26,d26
B类:
Temperature,dependent,behaviors,elastic,properties,BO3,monoclinic,symmetry,Rare,earth,calcium,crystals,rare,elements,kind,multifunctional,materials,In,this,work,temperature,constants,were,investigated,over,range,their,coefficients,evaluated,It,found,that,possesses,minimal,variation,relative,dielectric,frequency,ZY,cut,width,shear,vibration,mode,order,obtained,Particularly,show,low,respectively,indicating,existence,zero,Furthermore,electromechanical,coupling,factors,piezoelectric,studied,determined,pC,room,large,response,indicate,potential,usage,devices,wide
AB值:
0.386932
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