American Journal of Science, Engineering and Technology

Volume 4, Issue 3, September 2019

  • One of the Great Academician Alkey Margulan and His Time

    Ermekbay Zharas Akyshuly

    Issue: Volume 4, Issue 3, September 2019
    Pages: 41-47
    Received: 31 May 2019
    Accepted: 5 September 2019
    Published: 23 October 2019
    Abstract: The fate and scientific heritage of the outstanding scientist Alkey Khakanovich Margulan is always relevant. The phenomenon of Margulan remains as an example for all people who have dedicated their work to science. The article traces the chronicle of his life path (1904-1985). His parents raised him in a love for his native land, culture, history o... Show More
  • Magnetic Properties of Diluted Spinels MgxNi1−xFe2O4 Systems: Are Studied by Green’s Functions and Mean Field Theories

    Abdellah El Grini, Said Salmi, Abdelouahid Azouaoui, Ahmed Hourmatallah, Khalid Bouslykhane, Mohamed Hamedoun, Najib Benzakour

    Issue: Volume 4, Issue 3, September 2019
    Pages: 48-54
    Received: 6 March 2019
    Accepted: 5 May 2019
    Published: 29 October 2019
    Abstract: Many-body Green's function, and mean field theories have been developed for magnetic systems MgxNi1−xFe2O4. We apply this theory to evaluate thermal magnetization and magnetic susceptibility for different values of magnetic field and dilution x, by considering all components of the magnetisation when an external magnetic field is applied in (x-z)-p... Show More