High coercivity in a new molecular iron-based magnet

M.G.F. Vaz; J.D. Ardisson; N.L. Speziali; G.P. Souza; H.O. Stumpf; M. Knobel; W.A.A. Macedo

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High coercivity in a new molecular iron-based magnet

机译：新型分子铁基磁体的高矫顽力

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A new molecule-based magnet containing Fe(II), Fe(III) and Cu(opba)~(2-) (opba = ortho-phenylenebis(oxamato)) was synthesized. The samples were characterized by infrared spectroscopy, elemental analysis, atomic absorption, macroscopic magnetometry, X-ray diffraction, and ~(57)Fe Mossbauer spectroscopy. Magnetic measurements show that the compound presents a transition temperature below 15 K and a high coercivity, around 6.3 kOe at 4.2 K. At room temperature, the Mossbauer spectrum is dominated by a broad doublet characteristic of Fe(II), and a small fraction of Fe(III) ions is also identified. At 4.2 K, the spectrum shows clear magnetic splitting.

机译：合成了一种新的基于分子的磁体，该磁体包含Fe（II），Fe（III）和Cu（opba）〜（2-）（opba =邻苯二甲双（恶唑））。通过红外光谱，元素分析，原子吸收，宏观磁力分析，X射线衍射和〜（57）Fe Mossbauer光谱对样品进行表征。磁性测量表明，该化合物的转变温度低于15 K，矫顽力较高，在4.2 K时约为6.3 kOe。在室温下，Mossbauer光谱主要由Fe（II）的双峰特征所占据，而小部分的Fe（II） Fe（III）离子也被鉴定。在4.2 K下，光谱显示出清晰的磁裂。

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来源
《Polyhedron: The International Journal for Inorganic and Organometallic Chemistry》 |2001年第14期|共4页
作者
M.G.F. Vaz; J.D. Ardisson; N.L. Speziali; G.P. Souza; H.O. Stumpf; M. Knobel; W.A.A. Macedo;
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正文语种 eng
中图分类化学;无机化学;
关键词
Molecule-based magnets; magnetic properties; high coercivity; mossbauer spectroscopy;

机译：分子磁体;磁性能;高矫顽力;莫斯鲍尔光谱;

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High coercivity in a new molecular iron-based magnet

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