Abstract
In this work, polycrystalline powder samples of Cu0.64Mn0.86[Fe(CN)6]·7.2H2O and Cu0.84Mn0.66[Fe(CN)6]·7.1 H2O have been synthesized by a coprecipitation method. The lattice parameter a is 10.053(8) A and 10.083 A for Cu0.64Mn0.86[Fe(CN)6]·7.2H2O and Cu0.84Mn0.66[Fe(CN)6]·7.1H2O, respectively. When the temperature reaches to 5 K, the magnetization is 7.262 emu/g and 0.142 emu/g for Cu0.64Mn0.86[Fe(CN)6]·7.2H2O and Cu0.84Mn0.66[Fe(CN)6]·7.1H2O, respectively. The coercive field and the remanent magnetization of Cu0.64Mn0.86[Fe(CN)6]·7.2H2O are 1204 Oe and 0.382 μB/fu, respectively. The coercive field and the remanent magnetization of Cu0.84Mn0.66[Fe(CN)6]·7.1H2O are 833 Oe and 0.681 μB/fu, respectively. In the initial magnetization curve, under the external magnetic field of 7 T, the magnetization of Cu0.64Mn0.86[Fe(CN)6]·7.2H2O and Cu0.84Mn0.66[Fe(CN)6]·7.1H2O is 2.13 μB/fu and 2.44 μB/fu, respectively. The difference between the calculated magnetic moment and the theoretical magnetic moment is quite large, which may be due to spin frustration.
Published Version
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