A01组：现代分析电子显微学及应用

2009年度本研究组的主要科研活动包括：

• 利用高分辨电子显微学和几何位相分析方法研究了GaAs/AlSb 半导体异质界面的应变，其应变分布图用来直接识别异质界面的原子台阶。
• 利用EELS的低能损失谱计算了ZnO半导体纳米线的有效质量。
• 通过研究Ba(Ti1-xFex)O3-?的结构和物性，提出了六角结构Ba(Ti1-xFex)O3-?化合物中自旋玻璃和室温弱铁磁性来源于氧空位的出现和部分Ti4＋离子的降价。B位阳离子有序、氧空位和部分Ti4＋离子的降价引起了调制结构的出现。
• 研究了纳米Pt八面体粒子的催化行为，发现缺陷和原子台阶的产生可以有效增强其催化性能。
• 研究了PrCuMn6O12在高压下的物理性质，指出了压力有利于PrCuMn6O12中的电荷有序态。

Paper list(2009):

1. Pressure effects on the stability of magnetic structure of Mn3Zn1?xGexN (x=0,0.1);Kong XB, Sun Y, Yang LX, Yu Y, Jin CQ, Wang C, Yu RC;JOURNAL OF APPLIED PHYSICS106(2009)113905.

2. Phase transition of Zn2SnO4 nanowires under high pressure;Shen X, Shen J, You SJ, Yang LX, Tang LY, Li YC, Liu J, Yang H, Zhu K, Liu YL, Zhou WY, Jin CQ, Yu RC, Xie SS;
JOURNAL OF APPLIED PHYSICS106(2009)113523.

3. Structural stability and Raman scattering of ZnSe nanoribbons under high pressure;Yao LD, Wang FF, Shen X, You SJ, Yang LX, Jiang S, Li YC, Zhu K, Liu YL, Pan AL, Zou BS, Liu J, Jin CQ, Yu RC;JOURNAL OF ALLOYS AND COMPOUNDS480(2009)798.

4. Finite-element study of strain field in strained-Si MOSFET;Liu HH, Duan XF, Xu QX;
MICRON40(2009)274.

5.In Situ Lorentz Microscopy Observation of Displaced Chain Walls in Permalloy; Liu HH, Duan XK, Che RC, Wang ZF, Duan XF; MATERIALS TRANSACTIONS50(2009)1660

6.Polarity and inverse boundary of Sn-doped ZnO bicrystalnanobelts determined by electron energy-loss spectroscopy; Zhang N, Che RC, Shen J, Zhou WY, Duan XF; APPLIED PHYSICS A(2009)943.

7.Observation of surface structural changes of Pt octahedron nanoparticles and its effect in electrocatalysis oxidation of methanol; Liu YG,Wang YG,Zhang JY,Shi SL,Feng P,Wang TH; Catalysis Communications 10(2009)1244.

8. Measurement of the remnant magnetic-field in Lorentz mode using permalloy; Liu HH, Duan XK, Che RC, Wang ZF, Duan XF; ACTA METALLURGICA SINICA (ENGLISH LETTERS)22(2009).

9.Optical Properties of Hexagonal and Cubic ZnS Nanoribbons: Experiment and Theory; Zhang ZH, He M, Duan XF; CHINESE PHYSICS LETTERS26(2009)066104.

10.Dislocations in Si nanocrystals embedded in SiO2; Wang YQ, Li T, Liang WS, Duan XF, Ross GG; NANOTECHNOLOGY20(2009)315704.

11.The large-scale synthesis of one-dimensional TiO2 nanostructures using palladium as catalyst at low temperature; Xia MX, Zhang QL, Li HX, Dai GZ, Yu HC, Wang TH, Zou BS, Wang YG; NANOTECHNOLOGY20(2009)055605.

12.Fabrication of Patterned Polystyrene Nanotube Arrays in an Anodic Aluminum Oxide Template by Photolithography and the Multiwetting Mechanism; Li XR, Wang YQ, Song GJ, Peng Z, Li PD, Lin Q, Zhang N, Wang ZF, Duan XF; THE JOURNAL OF PHYSICAL CHEMISTRY B113(2009)12227.

13. AlSbPGaAs异质外延薄膜应变的HRTEM几何相位分析; 贺小庆,温才,卢朝靖,段晓峰; 电子显微学报28(2009)338.

14.Microstructure and defect investigations of the layered manganites La2-2xCa1+2xMn2O7 (x=0.6, 0.8 and 0.9) by HREM;　Wang YM, Yu RC; PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE206(2009)31.

15. Synthesis and magnetic properties of Al doped Zn0.995Mn0.005O powers; Li X, Yu Z, Long X, Lin PT, Cheng XW, Liu Y, Cao CB, Zhang HW, Wu GH, Yu RC; APPLIED PHYSICS LETTERS94(2009)252501.

16. Structural and Physical Properties of the 6M BalrO(3): A New Metallic Iridate Synthesized under High Pressure; Zhao JG, Yang LX, Yu Y, Li FY, Yu RC, Jin CQ; INORGANIC CHEMISTRY48(2009)4290.

17. A new "111" type iron pnictide superconductor LiFeP; Deng Z, Wang XC, Liu QQ, Zhang SJ, Lv YX, Zhu JL, Yu RC, Jin CQ; EUROPHYSICS LETTERS87(2009)37004.

18. Structural and electrical properties evolution in Ba1-xSrxRuO3 synthesized under high pressure; Zhao JG, Yang LX, Yu Y, Li FY, Yu RC, Jin CQ; JOURNAL OF SOLID STATE CHEMISTRY182(2009)1524.

19.Structural evolution in the graphitization process of activated carbon by high-pressure sintering; Zhao JG, Yang LX, Li FY, Yu RC, Jin CQ; CARBON47(2009)744.

20.Pressure-induced spin and charge transport in La1.25Sr1.75Mn2O7 single crystal; Mydeen K, Arumugam S, Prabhakaran D, Yu RC, Jin CQ; JOURNAL OF ALLOYS AND COMPOUNDS
468(2009)280.

21.Structural and physical properties of 1:2 B-site-ordered perovskite Ba3CaIr2O9; Zhao JG, Yang LX, Yu Y, Li FY, Yu RC, Jin CQ; JOURNAL OF SOLID STATE CHEMISTRY182(2009)327-330.