Combinatorial Fabrication and Characterization of Ternary La2O3–Mn2O3–Co3O4 Composition Spreads
Combinatorial Fabrication and Characterization of Ternary La2O3–Mn2O3–Co3O4 Composition Spreads
复制标题
三元 La2O3-Mn2O3-Co3O4 组合物的组合制备和表征
DOI：
10.1143/jjap.44.6164
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发表时间：
2005
影响因子：
1.5
通讯作者：
T. Chikyow
中科院分区：
文献类型：
--
作者：
D. Kukuruznyak;P. Ahmet;A. Yamamoto;F. Ohuchi;T. Chikyow
我们描述了筛选大型组合氧化物库，以确定其电输运特性。采用脉冲激光沉积技术，结合移动快门和旋转基片保持器，在单一导电的Nb掺杂SrTiO 3基片上沉积了La 2 O3-Mn 2 O3-Co 3 O 4三元氧化物合金。使用定制设计的扫描导电探针确定涂抹片的电阻。我们发现在三元扩散中的单一导电区域发展为两个分支，即接近理想LaMnO 3化学计量比的LaMnO 3钙钛矿和具有钙钛矿相关结构的宽的La 0. 65 Co 0. 35 OX-La 0. 20 Co 0. 80 OX系统。我们还发现，沿着连接线[La_（0. 20）Co_（0. 65）Mn_（0. 15）OX-La_（0. 57）Co_（0. 20）Mn_（0. 23）OX]的组分具有最弱的温度依赖性，因此可用于制备稳定的薄膜电阻和气敏元件。
We describe the screening of large combinatorial oxide libraries for determining their electric transport characteristics. Complete full ternary composition spreads of La2O3–Mn2O3–Co3O4 oxide alloys were deposited onto single conducting Nb-doped SrTiO3 substrates by the pulsed laser deposition technique incorporating a moving shutter and a rotating substrate holder. The electrical resistance of the spreads was determined using a custom-designed scanning conducting probe. We found that a single electrically conducting area in the ternary spread develops into two branches to LaMnO3 perovskites close to the ideal LaMnO3 stoichiometry and to a wide La0.65Co0.35OX–La0.20Co0.80OX system with perovskite-related structures. We also discovered that compositions along the tie line [La0.20Co0.65Mn0.15OX–La0.57Co0.20Mn0.23OX] exhibit the weakest temperature dependence and therefore could be used in fabricating of stable thin film resistors and gas sensors.