Počet záznamů: 1

Effect of pressure on magnetic properties of mixed ferroferrimagnet(Ni.sub.0.38./sub.Mn.sub.0.62./sub.).sub.3./sub.[Cr(CN).sub.6./sub.].sub.2./sub..zH.sub.2./sub.O

  1. 1.
    0347867 - FZU-D 2011 RIV GB eng J - Článek v odborném periodiku
    Zentková, M. - Mihalík, M. - Arnold, Zdeněk - Kamarád, Jiří
    Effect of pressure on magnetic properties of mixed ferroferrimagnet(Ni0.38Mn0.62)3[Cr(CN)6]2.zH2O.
    Journal of Physics: Conference Series. Roč. 200, č. 2 (2010), 022074/1-022074/4 ISSN 1742-6588
    Grant CEP: GA AV ČR IAA100100632
    Výzkumný záměr: CEZ:AV0Z10100521
    Klíčová slova: magnetization * compensation temperature * magnetic field
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus

    We present the results of magnetization measurements performed on the ferro–ferrimagnetic Ni0.38Mn0.62)3[Cr(CN)6]2.zH2O molecule–based magnet under pressures up to 0.8 GPa.Both antiferromagnetic JAF and ferromagnetic interaction JF are present in this magnet and temperature dependence of magnetization μ(T) exhibits the compensation temperature Tcomp at which the sign of the magnetization is reversed.Our results indicate that JAF dominates.The Curie temperature TC of the magnet increases with applied pressure, dTC/dp = 10.6 KGPa-1, due to strengthened JAF.The increase of the JAF is attributed to the enhanced value of the single electron overlapping integral S and the energy gap Δ of the mixed molecular orbitals t2g (Mn2+) and t2g (CrIII) induced by pressure.
    Trvalý link: http://hdl.handle.net/11104/0188544