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1.
以铝酸镧(001)单晶为基片,采用两步法制备Tl2Ba2CaCu2Oy(Tl 2212)高 温超导薄膜.首先,利用脉冲激光沉积(PLD)工艺沉积Ba2CaCu2Ox非晶前驱体薄膜;然后,前驱体薄膜在高温(720—850℃)下密封钢容器里铊化结晶形成Tl 2212薄膜.XRD结果表明Tl2212 薄膜是沿c轴方向生长的,其相组成为Tl 2212,摇摆曲线(0012)的半高宽为0.72° ,SEM图像显示其表面光滑平整,其零电阻温度为106.2K.
关键词:
Tl 2212超导薄膜
脉冲激光沉积 相似文献
2.
MAO Shao-Yu a② KANG You-Juna MI Jin-Xiaoa② LI Man-Rongb WEI Zan-Bina WU Xue-Yanb ZHAO Jing-Taib a 《结构化学》2006,25(2):173-179
1 INTRODUCTION Considerable research effort on the heavy metal fluoride glasses like barium, zirconium fluoride and a series of rare-earth fluorozirconate compounds du- ring the last two decades was initiated by the broad optical transmission window of these glasses and thereby the potential for ultralow-loss optical fi- bers[1~10]. The fluorozirconate of alkali metals was first reported in 1938[11], and most of the sodium and potassium fluorozirconates were reported amongthe 1940s and 19… 相似文献
3.
ZHOU Ming-Xiua② YANG Chuna DENG Xiao-Yana YU Wei-Feib LI Jin-Shanb a 《结构化学》2006,25(6):647-652
1 INTRODUCTION Silicon and its alloy have been widely applied in such fields as electronic industry, high-temperature structural ceramics, etc. In addition, the researches on silicon and its relevant materials greatly promote the rapid development of modern optics and infor- mation technology. Therefore, more and more at- tention is focused on the structure of silicon, oxide of silicon and the interfaces between silicon and metal or nonmetal. As an ideal passive film on the Si surface, S… 相似文献
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JIN Fenga b FENG Xiao-Juna TIAN Leia WU Jie-Yinga ZHOU Hong-Pinga TIAN Yu-Penga c a 《结构化学》2005,24(6):645-650
A new compound 1,1‘-bis(3-pyridyl)-propylene(3,7-diformyl-N-ethylphenothiazinyl)ketone (C30H23N3O2S, Mr = 489.4) has been synthesized, and its crystal structure was determined by single-crystal X-ray diffraction method. The crystal is of orthorhombic, space group Ima2 with a = 27.491 (5), b = 11.942(2), c = 7.389(2) A, V = 2425.8(7) A^3, Z = 8, Dc =1.340 g/cm^3,μ = 0,167 mm ^1, F(000) = 1024, the final R = 0.0363 and wR = 0.0869 for 2054 unique reflections with Rint = 0.0254. The structural determination shows that the molecule assumes a butterfly configuration with nearly planar wings. In addition, the electrochemical study indicates that there is a high electronic delocalization in the molecule. 相似文献
6.
1 INTRODUCTION donor due to the presence of the protonated carboxyl group; (d) it can form short bridges via one car- Coordination polymers are of great interest due to boxylato end or long bridges via the benzene ring[7]. their physical properties and potential applications in We believe that coordination functionality of isoph- functional materials[1~3]. Aromatic polycarboxylic acids thalate can lead to interesting structures. In this com- such as 1,2,4,5-benzenetetracarboxylic acid[4],… 相似文献
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LIU Langa JI Ya-Lia JIA Dian-Zenga② YU Kai-Beib a 《结构化学》2003,22(5):568-572
1 INTRODUCTION In recent years, investigations on the com- pounds containing hydrazide or hydrazone moieties have been increased considerably because of their potentially biological activities, especially as poten- tial inhibitors for many enzymes[1~5]. The presence of weak molecular interactions such as hydrogen- bonding controls the conformational and structural features which are important to the drug action[6, 7]. We have synthesized the photochromic compounds of pyrazolone thiosemi… 相似文献
10.
HOU Xiao-Mina b CHEN Ming-Huanga② XIE Jie-Mingc YE Xiao-Minga ZHAO Geng-Xianga b YANG Fenga b CHEN Li-Qingd HUANG Ming-Donga a 《结构化学》2006,25(9):1035-1038
1 INTRODUCTION The ribosome-inactivating proteins (RIPs) are RNA N-glycosidases[1, 2] which inactivate ribosomes by cleaving a single N–C glycosidic bond between adenine and ribose at A4324 in the 28s rRNA of rat. Because of the removal of one adenine from rRNA, elongation factorⅡ(EF-2) can not bind to the 60S subunit, so RIPs can arrest protein synthesis. RIPs can be classified into three types based on the struc- tures of genes and mature proteins[3]. Type 1 RIPs with molec… 相似文献