Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Wolfgang Speier"'
Autor:
Krzysztof Szot, Christian Rodenbücher, Krzysztof Rogacki, Gustav Bihlmayer, Wolfgang Speier, Krystian Roleder, Franciszek Krok, Hugo Keller, Arndt Simon, Annette Bussmann-Holder
Publikováno v:
Nanomaterials, Vol 14, Iss 23, p 1944 (2024)
The question as to why deoxidized SrTiO3−δ becomes metallic and superconducting at extremely low levels of oxygen vacancy concentration has been a mystery for many decades. Here, we show that the real amount of effused oxygen during thermal reduct
Externí odkaz:
https://doaj.org/article/1a4f8c3c5785434db8a313c1077debfe
Autor:
Kristof Szot, Christian Rodenbücher, Gustav Bihlmayer, Wolfgang Speier, Ryo Ishikawa, Naoya Shibata, Yuichi Ikuhara
Publikováno v:
Crystals, Vol 8, Iss 6, p 241 (2018)
Studies on dislocations in prototypic binary and ternary oxides (here TiO2 and SrTiO3) using modern TEM and scanning probe microscopy (SPM) techniques, combined with classical etch pits methods, are reviewed. Our review focuses on the important role
Externí odkaz:
https://doaj.org/article/9349e408fd134985add784ac8f43d841
Autor:
Franciszek Krok, M. Rogala, Jerzy Kubacki, Christian Rodenbücher, Dominik Wrana, Krzysztof Szot, Gustav Bihlmayer, Wolfgang Speier, Marcin Wojtyniak
Publikováno v:
Nanoscale. 10:11498-11505
The introduction of transition metal oxides for building nanodevices in information technology promises to overcome the scaling limits of conventional semiconductors and to reduce global power consumption significantly. However, oxide surfaces can ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04e589e211100453153b67e998e07ff6
https://doi.org/10.1039/c8nr02562b
https://doi.org/10.1039/c8nr02562b
Autor:
M. Rogala, Christian Rodenbücher, Krzysztof Szot, Gustav Bihlmayer, Zbigniew Klusek, Wolfgang Speier
Publikováno v:
Advanced Functional Materials. 25:6382-6389
Resistive switching of thermally treated rutile single crystals with (110) orientation is studied. A heat treatment procedure is developed that involves reduction and oxidation steps and allows to induce low resistance states in switchable regions at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8807914ebfd2cad87adcd5bbdf1c586
https://doi.org/10.1002/adfm.201500855
https://doi.org/10.1002/adfm.201500855
Publikováno v:
Nature Materials. 5:312-320
The great variability in the electrical properties of multinary oxide materials, ranging from insulating, through semiconducting to metallic behaviour, has given rise to the idea of modulating the electronic properties on a nanometre scale for high-d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e890a85db8b493530ceae6d441d86fbc
https://doi.org/10.1038/nmat1614
https://doi.org/10.1038/nmat1614
Autor:
Dominik Wrana, Franciszek Krok, Paul Meuffels, Wolfgang Speier, Christian Rodenbücher, Martin Ermrich, Kristof Szot
Publikováno v:
physica status solidi (RRL) - Rapid Research Letters. 11:1770345
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a7a2bb9402fafe174605f81b15c6bab
https://doi.org/10.1002/pssr.201770345
https://doi.org/10.1002/pssr.201770345
Autor:
Martin Ermrich, Kristof Szot, Franciszek Krok, Wolfgang Speier, Dominik Wrana, Paul Meuffels, Christian Rodenbücher
Publikováno v:
physica status solidi (RRL) - Rapid Research Letters. 11:1700222
Controlling the properties of the surface region of ternary perovskite-type titanates is of high importance in the field of future energy and information technologies. A common method to modify the surface of perovskite oxides such as SrTiO_{3} is an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f56fba0692be574ec3bdd5c8e7f3f91
https://doi.org/10.1002/pssr.201700222
https://doi.org/10.1002/pssr.201700222
Publikováno v:
Integrated Ferroelectrics. 33:303-310
The near-surface region in perovskite bulk crystals is known to be subject to segregation processes at elevated temperatures which can lead to the formation of non-perovskite phases. We have addressed the question whether analogue phenomena may occur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8dec3daf710cebf995cf71cd3b488b0e
https://doi.org/10.1080/10584580108222312
https://doi.org/10.1080/10584580108222312
Publikováno v:
Surface Science. 460:112-128
Droplet-like features and regularly shaped micro-crystals appear on the (100) surface of single-crystals of stoichiometric and doped SrTiO 3 as a result of heat treatment around 1000–1100°C under ambient pressure. Secondary ion mass spectrometry,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc50bec26c5c2219c19874982da556b4
https://doi.org/10.1016/s0039-6028(00)00522-7
https://doi.org/10.1016/s0039-6028(00)00522-7
Autor:
Wolfgang Speier, Uwe Breuer, Jürg Hulliger, Willem J. Quadakkers, H. Hesse, J. Kwapulinski, M Pawelczyk, Krzysztof Szot
Publikováno v:
Journal of Physics: Condensed Matter. 12:4687-4697
Measurements by x-ray diffraction, secondary ion mass spectrometry and atomic force microscopy are reported for single crystalline KTaO3 after thermal treatment under oxidizing conditions in the temperature range of 700 to 1100 °C. The formation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f87ae60350c09a10f1aec18676bfcd2c
https://doi.org/10.1088/0953-8984/12/22/302
https://doi.org/10.1088/0953-8984/12/22/302