• Article  

      Ferromagnetic and antiferromagnetic interactions in lanthanum cobalt oxide at low temperatures 

      Androulakis, J.; Katsarakis, N.; Giapintzakis, John (2001)
      Systematic dc and ac magnetic susceptibility studies have been performed on single-phase (formula presented) powder samples. Evidence is presented in support of the existence of ferromagnetic (FM1, FM2) and antiferromagnetic ...
    • Article  

      LaSrMnCoO6: A new cubic double perovskite oxide 

      Androulakis, J.; Katsarakis, N.; Giapintzakis, John; Vouroutzis, N.; Pavlidou, E.; Chrissafis, K.; Polychroniadis, E. K.; Perdikatsis, V. (2003)
      Single-phase polycrystalline powder samples of the double perovskite oxide LaSrMnCoO6 were synthesized by the Pechini (citrate-gel) technique. The structural, magnetic and electrical properties of the obtained powders were ...
    • Article  

      Near critical behavior in the two-dimensional spin-gap system SrCu2(BO3)2 

      Zorko, A.; Arčon, D.; Lappas, A.; Giapintzakis, John (2002)
      The temperature dependence of the powdered X-band ESR spectra has been measured in a two-dimensional spin-gap system SrCu2(BO3)2 in the temperature range between 5 and 300 K. The spectra are composed of two overlapping ...
    • Article  

      Resistive switching phenomena in Li xCoO 2 thin films 

      Moradpour, A.; Schneegans, O.; Franger, S.; Revcolevschi, A.; Salot, R.; Auban-Senzier, P.; Pasquier, C.; Svoukis, E.; Giapintzakis, John; Dragos, O.; Ciomaga, V.-C.; Chrétien, P. (2011)
      A substantial resistive switching of Li xCoO 2 mixed-conductor thin films is observed for the first time. The occurrence of possible bipolar switching in these oxide thin films is by current-voltage curves, investigated ...