Sr diffusion in undoped and La-doped SrTiO3 single crystals under oxidizing conditions
文献信息
Karsten Gömann, Günter Borchardt, Michał Schulz, Anissa Gömann, Wolfgang Maus-Friedrichs, Bernard Lesage, Odile Kaïtasov, Susanne Hoffmann-Eifert, Theodor Schneller
Strontium titanate SrTiO3(100), (110), and (111) single crystals, undoped or donor doped with up to 1 at% La, were isothermally equilibrated at temperatures between 1523 and 1773 K in synthetic air followed by two different methods of Sr tracer deposition: ion implantation of 87Sr and chemical solution deposition of a thin 86SrTiO3 layer. Subsequently, the samples were diffusion annealed under the same conditions as before. The initial and final depth profiles were measured by SIMS. For strong La-doping both tracer deposition methods yield similar Sr diffusion coefficients, whereas for weak doping the tracer seems to be immobile in the case of ion implantation. The Sr diffusivity does not depend on the crystal orientation, but shows strong dependency on the dopant concentration supporting the defect chemical model that under oxidizing conditions the donor is compensated by Sr vacancies. A comparison with literature data on Sr vacancy, Ti, and La diffusion in this system confirms the concept that all cations move via Sr vacancies. Cation diffusion is several orders of magnitude slower than oxygen diffusion.
期刊推荐

Drug Discovery Today

Russian Journal of Applied Chemistry

Russian Journal of Coordination Chemistry

Current Opinion in Colloid & Interface Science

Russian Chemical Bulletin

Chemical Communications

Acta Materialia

Russian Journal of Bioorganic Chemistry

Russian Journal of Organic Chemistry

Journal of Natural Medicines
相关文献
Organic acids can crosslink poly(ionic liquid)s into mesoporous polyelectrolyte complexes
Qiang Zhao, Sebastian Soll, Markus Antonietti, Jiayin Yuan
DOI: 10.1039/C3PY00159H
Selective oxidation of bio-based platform molecules and their conversion products over metal nanoparticle catalysts: a review
Konstantin L. Timofeev, Olga V. Vodyankina
DOI: 10.1039/D0RE00352B
Hydrogels locked by molecular recognition aiming at responsiveness and functionality
Guosong Chen, Ming Jiang
DOI: 10.1039/C2PY20693E
A simple combination of higher-oxidation-state FeX3 and phosphine or amineligand for living radical polymerization of styrene, methacrylate, and acrylate
Hiroshi Aoshima, Kotaro Satoh, Tomonari Umemura, Masami Kamigaito
DOI: 10.1039/C3PY00352C
Computational modelling of adsorption and diffusion properties of CO2 and CH4 in ZIF-8 for gas separation applications: a density functional theory approach
Hari P. Paudel, Wei Shi, David Hopkinson, Janice A. Steckel, Yuhua Duan
DOI: 10.1039/D0RE00416B
Polysialic acid as a drug carrier: evaluation of a new polysialic acid–epirubicin conjugate and its comparison against established drug carriers
Francesca Greco, Inam Arif, Ruth Botting, Cristina Fante, Luigi Quintieri, Chiara Clementi, Oddone Schiavon, Gianfranco Pasut
DOI: 10.1039/C2PY20876H
Cyclopolymerization-derived block-copolymers of 4,4-bis(octyloxymethyl)-1,6-heptadiyne with 4,4-dipropargyl malonodinitrile for use in photovoltaics
Mavila Sudheendran, Marta Horecha, Anton Kiriy, Suren A. Gevorgyan, Frederik C. Krebs
DOI: 10.1039/C2PY20774E
Reactive crystallization: a review
Matthew A. McDonald, Hossein Salami, Patrick R. Harris, Colton E. Lagerman, Xiaochuan Yang, Andreas S. Bommarius, Martha A. Grover, Ronald W. Rousseau
DOI: 10.1039/D0RE00272K
Synthesis of nanogel–protein conjugates
Nicholas M. Matsumoto, Daniella C. González-Toro, Reuben T. Chacko, Heather D. Maynard, S. Thayumanavan
DOI: 10.1039/C3PY00085K
Alternate pathway for standard SCR on Cu-zeolites with gas-phase ammonia
Rohil Daya, Christopher J. Keturakis, Dylan Trandal, Ashok Kumar, Saurabh Y. Joshi, Aleksey Yezerets
DOI: 10.1039/D1RE00041A
您可能还喜欢
如何储存1,2-环己二酮环乙缩醛(CAS号:4746-96-7)?
1,2-环己二酮环乙缩醛应储存在阴凉、干燥、通风良好的地方,避免阳光直射。建议使用密封容器保存,并保持环境温度在室温范围内,远离火源和热源。
Ecopladib(CAS号:381683-92-7)的市场或研究趋势如何?
Ecopladib作为一种新型的药物,主要应用于治疗高胆固醇等疾病。目前,市场和研究趋势显示,Ecopladib因其独特的药理作用而受到关注。随着对心血管疾病治...
2,3-Dimethyl-3H-imidazo[4,5-c]pyridine(CAS号:52538-09-7)通常如何合成?
2,3-二甲基-3H-咪唑[4,5-c]吡啶通常通过咪唑和2,3-二甲基吡啶的缩合反应合成。具体来说,将咪唑和2,3-二甲基吡啶在适当的溶剂中进行加热或加压反应...
2,3,4,5-tetrahydro-1H-3-苯并氮杂环;盐酸盐(CAS号:17379-01-0)的市场或研究趋势如何?
该化合物在药物化学和有机合成中有一定的应用。近年来,随着对新型药物化合物的需求增加,该化合物的研究趋势主要集中在探索其生物活性,尤其是其在神经系统疾病治疗中的潜...
如何储存盐酸甘氨酸丁酯(CAS号:13048-99-2)?
盐酸甘氨酸丁酯应储存在阴凉、干燥、通风良好的地方,避免阳光直射和高温环境,温度应控制在25℃以下。储存容器应密封,避免与空气中的水分和酸性物质接触,以防发生水解...
什么是2-Iodo-N,N-dimethylbenzamide(CAS号:54616-46-5)?
2-碘-N,N-二甲基苯胺是一种有机化合物,化学名为2-Iodo-N,N-dimethylbenzamide。其分子式为C<sub>9</sub>H<sub>1...
5-溴-2-(4H-1,2,4-三唑-4-基)吡啶(CAS号:959240-99-4)的市场或研究趋势如何?
随着医药、农药和新材料领域的发展,该化合物作为关键中间体的应用日益增多。特别是在药物合成中,由于其独特的化学性质,可以用于合成多种药物分子。未来的研究趋势可能集...
2,4-二溴-6-三氟甲基嘧啶(CAS号:785778-00-9)通常如何合成?
2,4-二溴-6-三氟甲基嘧啶通常通过溴化反应合成。首先,将6-三氟甲基嘧啶与溴化剂(如液溴)在适当的溶剂(如二氯甲烷、四氢呋喃)中反应,加入适当的催化剂(如四...
来源期刊
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.




