铈镁交替掺杂钛酸锶钡薄膜高调谐介电性能根据Ce掺杂,Mg掺杂以及Y和Mn交替掺杂可分别使Ba0.6Sr0.4TiO3(BST)薄膜的介电调谐率,介电损耗和综合介电性能提高,降低和提高的特点,采用改进的溶胶-凝胶(sol-gel)法制备了6层Ce和Mg交替掺杂BST薄膜,并研究其结构及介电性能. X射线衍射表明,该薄膜为立方钙钛矿结构,主要...
This spatial structure is thought to be the result of niche partitioning through the substrate use specialization and/or competitive exclusion (Bödeker et al., 2016). Saprotrophic fungi are more efficient in colonizing and degrading energy-rich litter (Voříšková and Baldrian, 2012) and ...
result = urlparse('https://uland.taobao.com/sem/tbsearch?refpid=mm_26632258_3504122_32538762&clk1=013680b42953fda7c0a81e95a5a7cead&keyword=&page=0',allow_fragments=False) print(result) 1. 2. 3. 4. 运行结果: ParseResult(scheme='https', netloc='uland.taobao.com', path='/sem/tbsearch...
The obtained result, resulting purely from the high symmetry of the BMM host, sets a promising precedent for temperature sensing using high-symmetry perovskite materials. The emission spectra with dominant red emission results in CIE color coordinates located at (0.631, 0.370) (Figure 5a). Such ...
However, their growth trajectories in the United States and South Africa indicate a substantial transmission advantage that will probably result in further expansion, as is being observed in countries such as the United Kingdom (Fig. 1a). Phylogenetically, these new subvariants evolved independently ...
The SEM images show the presence of Fe2As impurities (dark gray spots), which are not detected by the XRD measurements. The amount of Fe2As was estimated to be ~3.7% from the cross-section area of the SEM images. The black regions correspond to voids or cracks with the sizes of a ...
样品的SEM 照片表明, 低温制备的样品晶粒尺寸较小, 约为100~300 nm; 高温制备样品晶粒尺寸较大, 约为2~6 μm.测试了Eu3+, Dy3+, Sm3+掺杂的Ca(Sr, Ba)WO4发光材料的激发和发射光谱.计算了Eu3+掺杂的Ca(Sr, Ba)WO4的J-O强度参数Ωλ (λ=2,4), Ω2值随着阳离子半径增大迅速减小, 经分析它...
6(a). This makes BaBiO3 a topologically insulating material with the largest bulk band gap known so far, which is also stable against the oxidation effects [69]. This is a very promising result. When calculating the band structure for a monoclinic crystal phase (see Fig. 6(b)), the ...
a different one. As a result of encoding specificity, the students who took the test in the same place they learned the words were actually able to recall more words (Godden & Baddeley, 1975) than the students who took the test in a new setting. ...
🌻 The collaborative editing software that runs Wikipedia. Mirror from https://gerrit.wikimedia.org/g/mediawiki/core. See https://mediawiki.org/wiki/Developer_access for contributing. - mediawiki/languages/i18n/sk.json at 637ba6c7d04887ec54