稀有金属材料与工程
稀有金屬材料與工程
희유금속재료여공정
RARE METAL MATERIALS AND ENGINEERNG
2011年
11期
1897-1900
,共4页
王清波%周翠%陶前%许祝安
王清波%週翠%陶前%許祝安
왕청파%주취%도전%허축안
晶体生长%光学浮区法%氧气压%自旋梯子化合物
晶體生長%光學浮區法%氧氣壓%自鏇梯子化閤物
정체생장%광학부구법%양기압%자선제자화합물
crystal growth%optical floating-zone technique%oxygen pressure%spin ladder compound
利用光学浮区法制备了自旋梯子化合物Sr14-xCaxCu24O41 (SCCO)系列单晶样品,研究了氧气压对晶体生长的影响和制备条件对晶体性质的影响程度.发现在常压氧气氛下可以制备出Ca含量x小于8的大块高质量的SCCO晶体,但更高Ca含量的样品仍然必须在高压氧气氛下(0.9 MPa)下进行.采用XRD,EDX能谱和电阻率测量实验手段对不同条件制备的SCCO单晶样品进行的分析测试表明,不同氧气压制备出的SCCO单晶样品的性质差别较小,但是高压氧气氛更有利于高Ca含量样品的晶体生长.
利用光學浮區法製備瞭自鏇梯子化閤物Sr14-xCaxCu24O41 (SCCO)繫列單晶樣品,研究瞭氧氣壓對晶體生長的影響和製備條件對晶體性質的影響程度.髮現在常壓氧氣氛下可以製備齣Ca含量x小于8的大塊高質量的SCCO晶體,但更高Ca含量的樣品仍然必鬚在高壓氧氣氛下(0.9 MPa)下進行.採用XRD,EDX能譜和電阻率測量實驗手段對不同條件製備的SCCO單晶樣品進行的分析測試錶明,不同氧氣壓製備齣的SCCO單晶樣品的性質差彆較小,但是高壓氧氣氛更有利于高Ca含量樣品的晶體生長.
이용광학부구법제비료자선제자화합물Sr14-xCaxCu24O41 (SCCO)계렬단정양품,연구료양기압대정체생장적영향화제비조건대정체성질적영향정도.발현재상압양기분하가이제비출Ca함량x소우8적대괴고질량적SCCO정체,단경고Ca함량적양품잉연필수재고압양기분하(0.9 MPa)하진행.채용XRD,EDX능보화전조솔측량실험수단대불동조건제비적SCCO단정양품진행적분석측시표명,불동양기압제비출적SCCO단정양품적성질차별교소,단시고압양기분경유리우고Ca함량양품적정체생장.
Spin ladder compounds Sr14-xCaxCu24O41 (SCCO) single crystals have been grown under different oxygen pressures by an optical floating-zone technique.The effects of oxygen pressure on the crystal growth and properties of SCCO were studied.The SCCO single crystals with x≤8 can be grown in a flowing oxygen atmosphere.But the growth of the SCCO compounds with higher Ca content (x＞8) needs higher pressure (0.9 MPa).The single crystals were characterized by means of XRD,EDX and resistivity measurement.High pressure is in favor of forming of higher Ca-doped SCCO single crystals.SCCO single crystals grown under different oxygen pressures have almost the same quality.
