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- La2-2xSr2xCu2yO3±zLa2-2xSr2xCu2yO3±z
- La2（MoO4）3La2 ( MoO4 ) 3
- La2-xSrxNiO4La2-xSrxNiO4
- La2/3-xLi3xTiO3La2/3-xLi3xTiO3
- La2（SO4）3／SiO2La2 (SO4)3/SiO2
- La2-xMxCuO4超導體La2-xMxCuO4 superconductor
- La2／3Sr1／3MnO3La2/3 Sr1/3 MnO3
- La2/3Pb1/3MnO3薄膜La2/3 Pb1/3 MnO3 thin film
- La2/3Pb1/3MnO3外延膜La2/3 - Pb1/3 - MnO3 epitaxial film
- La2/3Ba1/3MnO3/xWO3復合物La2/3Ba1/3MnO3/xWO3composites
- 合成了La212型新化合物L(fēng)a2－xSrxCa0.5Pr0.5Cu2O6；A new compound La 2-x Sr xCa 0.5 Pr 0.5 Cu 2O 6 was synthesized.
- 研究了以Y2 O3 和Y2 O3 +La2 O3 為燒結助劑的Sialon陶瓷的常壓燒結過(guò)程及其相結構。The pressureless sintering process adding Y 2O 3 and Y 2O 3+La 2O 3 as sintering aids was studied.
- 結果發(fā)現 ,在Li2 SO4/MgO催化劑中引入少量Sm2 O3 可以提高催化劑活性和生成C2 烴的選擇性 ,而加入少量La2 O3 會(huì )降低甲烷轉化率。The results show that the activity of catalyst and the selectivity of C_2 hydrocarbons can be improved when a little Sm_2O_3 adds to Li_2SO_4/MgO catalyst,but the conversion of methane will be reduced when a little La_2O_3 adds to.
- 我們測量了La2-xMxCuO4(LMCO,M=Sr,Ba,x=0.05,0.10,0.125,0.15,0.2)體系的室溫正電子壽命譜,研究了正電子湮沒(méi)機制與超導電性之間的關(guān)系.We have measured the Positron lifetime spectra of La_ 2-x M_xCuO_4(LMCO,MSr,Ba,x0.05,0.10,0.125,0.15,0.2) in the room temperature and studied the relationship between the superconductivity and the mechanism of positron annihilation.
- 研究表明:(1)鐵磁/dx2-y2+idxy混合波超導結中自旋極化的隧道譜能較好地解釋La2/3Ba1/3MnO3/DyBa2Cu3O7隧道結中觀(guān)察到的零偏壓電導凹陷的實(shí)驗結果;It is found that: (1) The spin-polarized tunneling spectra in the ferromagnet /dx2-y2+idxywixed wave superconductor juntions can explain well experimental measurements of the conductance dip at zero-bias observed in La2/3Ba1/3MnO3/DyBa2Cu3O7 junctions;
- CH4與O2 和H2 O在Ni Cu/MgSiO催化劑上反應的主要產(chǎn)物為H2 和CO2 .La2 O3 的加入有利于提高CH4轉化率及H2 的選擇性 ,并可提高催化劑穩定性及抗積炭能力 .The main products of CH 4 partial oxidation by H 2O and O 2 on the Ni-Cu-La 2O 3/MgSiO catalyst are H 2 and CO 2. With the addition of La 2O 3, the conversion of CH 4, the selectivity for H 2 and the catalyst stability increase, and coke deposition decreases.
