Structural characterization and ferroelectric properties of strontium barium niobate (Sr xBa1-xNb2O6) thin films

Materials Research

R.g. Mendes²  E.b. Araújo¹  J.a. Eiras¹ 

[1] ,Universidade Federal de São Carlos Departamento de Engenharia de Materiais São Carlos SP ,Brazil

关键词: thin films;    SBN;    tungsten bronze structure;   

DOI  :  10.1590/S1516-14392001000200013

来源: SciELO

【 摘 要 】

Strontium barium niobate (SBN) thin films of good quality were deposited on Pt/Ti/SiO2/Si substrate using a polymeric resin containing metallic ions. Films were crystallized at different temperatures and for different duration of time. The structure of these films was studied using X-ray diffraction. The coexistence of SrNb2O6 (SN) and SBN was observed in films crystallized at 700 °C. The amount of SN decreases when the crystallization time increases. Ferroelectric properties were determined for films crystallized at 700 °C for 1 and 5 h. For SBN film crystallized at 700 °C for 1 h, the remanent polarization (Pr) and the coercive field (Ec) were 2.6 muC/cm² and 71.9 kV/cm, respectively. For the film crystallized at 700 °C for 5 h these parameters were Pr = 1.1 muC/cm² and Ec = 50.5 kV/cm.

【 授权许可】

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