Manganese-doped feroxyhyte nano-urchins produced by chemical methods
Manganese-doped feroxyhyte nano-urchins produced by chemical methods
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DOI：
10.1007/s10751-018-1506-2
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发表时间：
2018-07
影响因子：
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通讯作者：
N. Nishida;S. Amagasa;Honami Ito;Y. Kobayashi;Y. Yamada
中科院分区：
文献类型：
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作者：
N. Nishida;S. Amagasa;Honami Ito;Y. Kobayashi;Y. Yamada
采用湿化学法，以铁盐和锰盐的混合物为原料，合成了Mn掺杂的δ-FeOOH纳米粒子。所得颗粒呈针状，长度约100 nm，具有纳米海胆结构。计算得到4种样品的成分分别为δ-Fe 0.92Mn 0.08OOH、δ-Fe 0.75Mn 0.25OOH、δ-Fe 0.56Mn 0.44OOH和δ-Fe 0.32Mn 0.68OOH。纳米粒子的超顺磁性行为是由它们的室温穆斯堡尔谱确定的。Mn原子取代Fe原子后，Mn掺杂δ-FeOOH纳米粒子的超精细磁场减弱。此外，锰原子局部掺杂到δ-FeOOH中。
Mn-doped feroxyhyte (δ-FeOOH) nanoparticles were synthesized using a wet chemical method, starting from a mixture of iron and manganese salts. The particles obtained were needle-like, around 100 nm in length, and formed had a nano-urchin structure. The compositions of the four samples obtained were calculated to beδ-Fe0.92Mn0.08OOH,δ-Fe0.75Mn0.25OOH,δ-Fe0.56Mn0.44OOH, andδ-Fe0.32Mn0.68OOH. The superparamagnetic behavior of the nanoparticles was determined from their room-temperature Mössbauer spectra. The hyperfine magnetic field of the Mn-dopedδ-FeOOH nanoparticles decreased when iron atoms were substituted by Mn atoms. Furthermore, Mn atoms were locally doped intoδ-FeOOH.