Journal of Low Temperature Physics

, Volume 73, Issue 3–4, pp 305–319 | Cite as

Observation of large diamagnetism in La-Sr-Nb-O films up to room temperature

  • T. Ōgushi
  • S. Higo
  • N. G. Suresha
  • Y. Honjo
  • Y. Ōzono
  • I. Kawano
  • Y. Hakuraku
  • L. Rinderer


Large diamagnetic transitions along with sharp resistive transitions were observed in the La-Sr-Nb-O system near room temperature (∼290 K). The amplitude of the diamagnetism reaches 35% of that of a pure Nb sheet. In addition, a behavior similar to weak magnetic spin ordering was observed for some samples at a temperature of about 290 K, over a temperature range of 30 K. The diamagnetism reappears above this temperature and continues up toT ∼320 K. It is not clear what composition ratio of La-Sr-Nb-O is responsible for this large diamagnetism and the high critical temperature. The yield probability of these samples is around 50%. The characteristics of the samples having not passed through many thermal cycles remain stable for about 1 month.


Critical Temperature Magnetic Material Thermal Cycle Composition Ratio Resistive Transition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Plenum Publishing Corporation 1988

Authors and Affiliations

  • T. Ōgushi
    • 1
  • S. Higo
    • 1
  • N. G. Suresha
    • 1
  • Y. Honjo
    • 1
  • Y. Ōzono
    • 1
  • I. Kawano
    • 1
  • Y. Hakuraku
    • 1
  • L. Rinderer
    • 2
  1. 1.Department of ElectronicsKagoshima UniversityKagoshimaJapan
  2. 2.Institute of Experimental PhysicsLausanne UniversityLausanne-DorignySwitzerland

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