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
Solar UV index and UV dose determination with photochromic hackmanites: from the assessment of the fundamental properties to the device (2018)
Materials Horizons
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))
Angular and field dependent flux pinning in artificially doped YBCO films on IBAD-MgO based template (2018)
Physica C: Superconductivity and its Applications
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))
Catalytic dehydrogenation of ethanol into acetaldehyde and isobutanol using mono- and multicomponent copper catalysts (2018)
Comptes Rendus Chimie
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))
Increasing coercivity of ferromagnetic zinc oxide with thermal acetylene treatment (2018)
IEEE International Conference on Nanotechnology
(Vertaisarvioitu artikkeli konferenssijulkaisussa (A4))
Tuning the probability of defect formation via substrate strains in Sr2FeMoO6 films (2018)
Physical Review Materials
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))
Angle dependent molecular dynamics simulation of flux pinning in YBCO superconductors with artificial pinning sites (2018)
Journal of Physics: Condensed Matter
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))
Surface topography and electrical properties in Sr2FeMoO6 films studied at cryogenic temperatures (2018)
International Conference on Low Temperature Physics, Journal of Physics: Conference Series
(Vertaisarvioitu artikkeli konferenssijulkaisussa (A4))
Improved interface growth and enhanced flux pinning in YBCO films deposited on an advanced IBAD-MgO based template (2018)
Physica C: Superconductivity and its Applications
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))
Electrical properties of surface and interface layers of the N- and In-polar undoped and Mg-doped InN layers grown by PA MBE (2018)
Applied Physics Letters
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))
Magnetic biomonitoring with moss bags to assess stop-and-go traffic induced particulate matter and heavy metal concentrations (2018)
Atmospheric Environment
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))