Petriina Paturi
Professor, Vice-dean of Faculty of Science
petriina.paturi@utu.fi +358 29 450 2396 +358 41 506 0895 Vesilinnantie 5 Turku : 028 |
superconducitivity; magnetism; flux pinning; YBCO; manganites; thin films; X-ray diffraction; magnetometry; pulsed laser deposition
I have been a professor of experimental solid state physics in the WIhuri Physical Laboratory, Department of Physics and Astronomy, University of Turku since 2012. I got my MSc in 1994 in University of Turku and continued towards PhD as a Academy of Finland research assistant. I defended my thesis on YBCO thin films and nanoparticles in 1998. After that I worked as an Academy post-doc researcher in Risø National Laboratory, Denmark and in University of Turku. In years 2003-2009 I was an Academy research fellow at University of Turku. Since 2009 I have been a professor and the director of Wihuri Physical Laboratory. During years 2012-2017 I was also the head of the Department of Physics and Astronomy. Since 2017 I have been the vice-dean of the Faculty of Science and Engineering in charge of teaching. Since beginning of 2019 I have been a member of the Research Council in Science and Wngineering in the Academy of Finland.
My research concentrates on flux pinning in YBCO thin films with artificial pinning sites and the theoretical modeling of these. We have found that the addition of columnar pinning sites into the films decreases the field dependence of the critical current density and changes the angular dependence. These changes depend on the size of the columns.
The other main topic is low bandwidth manganites. Currently we are investigating the structural, magnetic and resistive properties of (Pr,Ca)MnO3 and (Gd,Ca)MnO3 thin films. We have e.g. found that we can induce a metal-insulator-transition to the PCMO films by illumination and that the GCMO films have a charge-ordered state still at room temperaure. We have also recently shown that low bandwidth manganites can be used as resistive switching devices. These are needed in e.g. neuromorphic computers.
During the years I have taught many courses in solid state physics, superconductivity and magnetism at BSc and MSc level. Currently I teach BSc course of statistical physics and MSc courses in structural and thermal properties of solids, magnetism and spintronics and x-ray diffraction methods. I have tried to use active teaching methods, such as flipped classroom and pre-lecture questions, in all my courses. I have full teachers qualification in university pedagogics.
- Electron Doping Effect in the Resistive Switching Properties of Al/Gd 1- x Ca x MnO 3/Au Memristor Devices (2021)
- ACS Applied Materials and Interfaces
- Exploring the anti-site disorder and oxygen vacancies in Sr2FeMoO6 thin films (2021)
- Journal of Magnetism and Magnetic Materials
- Metastable ferromagnetic flux closure-type domains in strain relaxed Gd0.1Ca0.9MnO3 thin films (2021)
- Journal of Physics: Condensed Matter
- Multilayering BZO nanocolumns with different defect densities for YBCO high field applications (2021)
- New Journal of Physics
- Proton irradiation effects on metal-YBCO interfaces (2021)
- Radiation Physics and Chemistry
- Strain-Induced Domain Structure and Its Impact on Magnetic and Transport Properties of Gd0.6Ca0.4MnO3 Thin Films (2021)
- ACS Omega
- Tuned AFM-FM coupling by the formation of vacancy complex in Gd0.6Ca0.4MnO3 thin film lattice (2021)
- Journal of Physics: Condensed Matter
- Appearance of glassy ferromagnetic behavior in Gd1-xCaxMnO3 (0 <= x <= 1) thin films: A revised phase diagram (2020)
- Journal of Magnetism and Magnetic Materials
- Electrical conduction mechanisms of metal/high-T-c superconductor (YBCO) interfaces (2020)
- Journal of Physics: Condensed Matter
- High Critical Current Density and Enhanced Pinning in Superconducting Films of YBa2Cu3O7-delta Nanocomposites with Embedded BaZrO3, BaHfO3, BaTiO3, and SrZrO3 Nanocrystals (2020)
- ACS Applied Nano Materials
- Lattice defect induced nanorod growth in YBCO films deposited on an advanced IBAD-MgO template (2020)
- Superconductor Science and Technology
- Modifying the critical current anisotropy of YBCO films via buffering layers on IBAD-MgO based templates (2020)
- Journal of Physics: Conference Series
- Refined Sr2FeMoO6 interface realized with photoemission and magnetization analysis (2020)
- Applied Surface Science
- Self-assembled nanorods in YBCO matrix - a computational study of their effects on critical current anisotropy (2020)
- Scientific Reports
- YBCO-based non-volatile ReRAM tested in Low Earth Orbit (2020)
- Journal of Materials Science: Materials in Electronics
- Enhanced flux pinning isotropy by tuned nanosized defect network in superconducting YBa2Cu3O6+x films (2019)
- Scientific Reports
- First-principles investigations of the magnetic phase diagram of Gd1-xCaxMnO3 (2019)
- Physical Review B
- Hydrodeoxygenation of Isoeugenol over Ni- and Co-Supported Catalysts (2019)
- ACS Sustainable Chemistry and Engineering
- Improving the Flux Pinning With Artificial BCO Nanodots and Correlated Dislocations in YBCO Films Grown on IBAD-MgO Based Template (2019)
- IEEE Transactions on Applied Superconductivity
- Metamagnetic transition and spin memory effect in epitaxial Gd1-xCaxMnO3 (0 ≤x≤ 1) thin films (2019)
- Journal of Magnetism and Magnetic Materials