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.
- Photo-induced insulator-metal transition in Pr0.6Ca0.4MnO3 thin films grown by pulsed laser deposition: Effect of thickness dependent structural and transport properties (2016)
- Applied Surface Science
- The low-temperature magnetostructure and magnetic field response of Pr0.9Ca0.1MnO3: the roles of Pr spins and magnetic phase separation (2016)
- Journal of Physics: Condensed Matter
- Toward Versatile Sr2FeMoO6-Based Spintronics by Exploiting Nanoscale Defects (2016)
- ACS Applied Materials and Interfaces
- Anomalous Thermal Expansion in (Pr,Ca)MnO3 due to Orbital Ordering (2015)
- Physics Procedia
- Defect induced enhanced low field magnetoresistance and photoresponse in Pr(0.6)Ca(0.4)MnO(3) thin films (2015)
- Physics Procedia
- Epitaxially textured PCMO thin films under considerably low substrate temperature (2015)
- Physics Procedia
- Growth Condition Dependence of Microcracks in YBCO Thin Films Pulsed Laser Deposited on NdGaO3 (001) Substrates (2015)
- IEEE Transactions on Applied Superconductivity
- Influence of SrF2 on the Formation, Microstructure and Critical Temperature of (Bi,Pb)(2)Sr2Ca2Cu3O10 Polycrystalline Samples (2015)
- Journal of Superconductivity and Novel Magnetism
- Influence of the ytterbium doping technique on the luminescent properties of ZnSe single crystals (2015)
- Journal of Luminescence
- Magnetically Defined Birr and Bc2 in BaCeO3 Doped YBa2Cu3O6+x Thin Films Grown Under Tensile and Compressive Strain (2015)
- IEEE Transactions on Applied Superconductivity
- Magnetic and luminescent properties of nickel-doped ZnSe crystals (2015)
- Solid State Sciences
- Melting of the charge-ordered state under substantially lower magnetic field in structurally improved Pr1-xCaxMnO3 (x=0.3-0.5) thin films (2015)
- Journal of Magnetism and Magnetic Materials
- Oxygen-sintered (Pr,Ca) MnO3: Structure and magnetism at high Ca concentrations (2015)
- Journal of Alloys and Compounds
- Persistent Luminescence of Tenebrescent Na8Al6Si6O24(Cl,S)2: Multifunctional Optical Markers (2015)
- Inorganic Chemistry
- Photoinduced Colossal Magnetoresistance under Substantially Reduced Magnetic Field (2015)
- Advanced Functional Materials
- Stronger Photo-Induced Effect in Epitaxial Thin Films of Small-Bandwidth Manganite Pr1-xCaxMnO3 Compared to the Polycrystalline Bulk (2015)
- Journal of Superconductivity and Novel Magnetism
- The Angular Dependence of the Critical Current of BaCeO3 Doped YBa2Cu3O6+x Thin Films (2015)
- IEEE Transactions on Applied Superconductivity
- The predominance of substrate induced defects in magnetic properties of Sr2FeMoO6 thin films (2015)
- Journal of Physics: Condensed Matter
- Thickness dependent properties of SFMO thin films grown on STO and LSAT substrates (2015)
- Physics Procedia
- Investigation of the bulk pinning force in YBCO superconducting films with nano-engineered pinning centres (2014)
- Physica C: Superconductivity and its Applications