中科院电工所应用超导重点实验室首次利用强磁场条件成功制备出gamma-Fe2O3磁性纳米管.该研究制备出的gamma-Fe2O3磁性纳米管直径约为300nm,长度大约为30μm,具有较好的结晶性,而且在室温下表现出典型的铁磁性质.与已报道的制备方法相比,该方法具有过程简单,合成时间短,样品结晶性好等优点,这为纳米材料的制备提供了...
最近要计算一个gamma-Fe2O3相关的体系，该体系比较复杂，里面的Fe分为Fe-oct和Fe-tet，原胞中8个Fe...
球, 用硝酸处理并最终在硝酸铁溶液中超声 Fe 3 O 4 纳米实心球, 得到了晶粒尺寸约在 5 nm 的 -Fe 2 O 3 纳米空心球. X 射线衍射(XRD)、X 射线散射能谱(EDS)、扫描/透射电子显微镜(SEM/ HRTEM)、氮气和孔径分布(BJH)证明所得的样品为高纯的具有孔结构的 -Fe 2 O 3 纳米空心球. 超 导量子干涉...
1 棕红色 2 有的有弱磁性，可以被吸起，有的不行。
纳米γ-Fe_2O_3粒子 1. The γ-Fe_2O_3 nanoparticles with different magnetic properties were prepared by oxidation of Fe_3O_4 nanoparticles in the air. 以纳米 Fe_3O_4粒子为原料,通过空气氧化法, 制备出了具有不同磁性能的球形和立方形纳米γ-Fe_2O_3 粒子,研究了纳米γ-Fe_2O_3粒子的磁...
A combustible gas sensor using semiconducting gamma hematite\gammaFe2<03 ceramics has been developed. This sensor is made by applying a remarkable gas sensitive phenomenon observed in\gammaFe2O3ceramics. Clarification of the gas sensitive behavior and degradation mechanism permitted device life time to...
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We report the magnetic properties for dispersed, spherical Fe3O4 and gamma-Fe2O3 particles similar to 250 nm in diameter in the temperature range T = 4.2-294 K. For Fe3O4, hysteresis properties show anomalies at 130 K, where the magnetocrystalline anisotropy constant K-1 vanishes; the ra...
lactate colorimetric sensor;bi-phase γ-/α-Fe2O3;peroxidase-like activity;lactate oxidation;bi-phase γ-/α-Fe2O3/ZnO Graphical Abstract 1. Introduction Lactate is a metabolite resulting from the anaerobic process of the respiratory chain in cells. Its quantifying is related to clinical diagnosi...
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