Petriina
Paturi
Senior Researcher, Wihuri Physical Laboratory
Professor, Wihuri Physical Laboratory
Professor, Vice-dean of Faculty of Science
Links
Areas of expertise
superconducitivity
magnetism
flux pinning
YBCO
manganites
thin films
X-ray diffraction
magnetometry
pulsed laser deposition
Biography
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.
Teaching
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.
Research
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.
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.
Publications
Structurally simplified GCMO crossbar design for artificial synaptic networks (2024)
Applied Physics Letters
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
Integration Of Solution-Processed BaTiO3 Thin Films with High Pockels Coefficient on Photonic Platforms (2024)
Advanced Functional Materials
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
Scalable and environmentally friendly production of perovskite manganite thin films for neuromorphic applications (2024)
Thin Solid Films
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
Polycrystalline silicon, a molecular dynamics study: II. Grains, grain boundaries and their structure (2024)
Modelling and Simulation in Materials Science and Engineering
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
Improved crystalline quality and self-field Jc in sequentially vacuum-multilayered YBCO thin films on buffered metallic templates (2023)
IEEE Transactions on Applied Superconductivity
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))
Optimization of high-temperature superconducting multilayer films using artificial intelligence (2023)
New Journal of Physics
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))
Ongoing effects of pandemic-imposed learning environment disruption on student attitudes (2023)
Physical Review Physics Education Research
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
Defining optimal thickness for maximal self-field J(c) in YBCO/CeO2 multilayers grown on buffered metal (2023)
Journal of Physics: Condensed Matter
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))
Interactions between Iron and Nickel in Fe-Ni Nanoparticles on Y Zeolite for Co-Processing of Fossil Feedstock with Lignin-Derived Isoeugenol (2023)
ACS Applied Nano Materials
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))
Hydrothermal Synthesis of Ni3TeO6 and Cu3TeO6 Nanostructures for Magnetic and Photoconductivity Applications (2023)
ACS Applied Nano Materials
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )