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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
- 1.0347867 - FZÚ 2011 RIV GB eng J - Journal Article
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. E-ISSN 1742-6596
R&D Projects: GA AV ČR IAA100100632
Institutional research plan: CEZ:AV0Z10100521
Keywords : magnetization * compensation temperature * magnetic field
Subject RIV: BM - Solid Matter Physics ; Magnetism
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.
Permanent Link: http://hdl.handle.net/11104/0188544
Number of the records: 1