脉冲激光沉积技术沉积温度对PZT/LSAT薄膜生长取向的影响  被引量:7

Influence of Deposition Temperature on Growth Orientation of PZT/LSAT Thin Film

在线阅读下载全文

作  者:朱杰[1] 谢康[1] 张辉[2] 胡俊涛[2] 张鹏翔[2] 

机构地区:[1]电子科技大学宽带光纤传输与通信网技术教育部重点实验室,四川成都610054 [2]昆明理工大学光电子新材料研究所,云南昆明650051

出  处:《中国激光》2008年第9期1384-1387,共4页Chinese Journal of Lasers

基  金:国家自然科学基金(60588502)资助项目

摘  要:采用固相法分别制备了标准摩尔配比和铅过量10%的两种靶材,并利用脉冲激光沉积技术(PLD)在镧锶铝钽(LaSrAlTaO3,LSAT)单晶衬底上成功制备了锆钛酸铅(Pb(Zr0.3Ti0.7)O3,PZT)铁电薄膜,在550~750℃沉积温度范围内研究了PZT薄膜的生长取向和铅含量对薄膜生长取向的影响。利用X射线衍射(XRD)仪和原子力显微镜(AFM)表征了薄膜生长取向和表面形貌。XRD测量表明在标准摩尔配比情况下薄膜生长从550℃近似c轴取向逐渐过渡到750℃近似a轴取向,而在铅过量情况下薄膜生长取向无明显过渡性变化;AFM测量表明PZT薄膜在近似c轴和a轴生长情况下,表面均方根(RMS)粗糙度分别为16.9nm和13.7nm,而在混合生长无择优取向的情况下,薄膜表面均方根粗糙度达到68nm,这可能是两种取向竞争生长的结果。Pb (Zr0.3 Ti0.7 )03 (PZT) ferroelectric thin films are grown by pulsed laser deposition (PLD) on LaSrAlTaO3 (LSAT) single crystal substrates from sintered targets of Pb ( Zr0.3 Ti0.7 ) 03 and Pb1. 1 (Zr0.3 Ti0.7 ) 03 (excessive 10%-Pb) with variable temperature of 550 ~ 750 ℃, respectively. The pattern observed by X-ray diffraction (XRD) indicates that the orientation of thin film growth transits from approximate c-axis at 550 ℃ to approximate maxis at 750 ℃ gradually in the no-excessive situation. But in the lead excessive situation, the thin film growth has no obvious transition change. Surface morphology measured by atomic force microscopy (AFM) demonstrates that the root-mean-square (RMS) roughnesses are 16.9 nm and 13.7 nm respectively when the PZT films are grown of approximate c-axis and a-axis. But in the mixed growth orientation, the RMS roughness was about 68 nm due to the competition growth.

关 键 词:薄膜 铁电薄膜 薄膜取向 脉冲激光沉积 X射线衍射 原子力显微镜 

分 类 号:O484[理学—固体物理]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象