gadolinium;iron;hydrate

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 过渡金属有机体
• 英文名称: gadolinium;iron;hydrate
• 化学式: FeGdO
• InChiKey: XVKDGXGXMURLMM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.83
• 重原子数：
  3
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  1
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  在 葡萄糖 、 3-(N-morpholino)propanesulfonic acid buffer 作用下， 以 水 为溶剂， 生成 gadolinium;iron;hydrate
  参考文献：
  名称：

  Magnetic response of microbially synthesized transition metal- and lanthanide-substituted nano-sized magnetites

  摘要：

  The magnetic susceptibility (kappa(RT)) and saturation magnetization (M-S) of microbially synthesized magnetites were systematically examined. Transition metal (Cr, Mn, Co, Ni and Zn)- and lanthanide (Nd, Gd, Tb, Ho and Er)-substituted magnetites were microbially synthesized by the incubation of transition metal (TM)- and lanthanide (L)-mixed magnetite precursors with either thermophilic (TOR-39) or psychrotolerant (PV-4) metal-reducing bacteria (MRB). Zinc incorporated congruently into both the precursor and substituted magnetite, while Ni and Er predominantly did not. Microbially synthesized Mn- and Zn-substituted magnetites had higher kappa(RT) than pure biomagnetite depending on bacterial species and they exhibited a maximum kappa(RT) at 0.2 cationic mole fraction (CMF). Other TMs' substitution linearly decreased the kappa(RT) with increasing substitution amount. Based on the M-S values of TM- and L-substituted magnetite at 0.1 and 0.02 CMF, respectively, Zn (90.7 emu/g for TOR-39 and 93.2 emu/g for PV-4)- and Mn (88.3 emu/g by PV-4)-substituted magnetite exhibited higher M-S than standard chemical magnetite (84.7 emu/g) or pure biomagnetite without metal substitution (76.6 emu/g for TOR-39 and 80.3 emu/g for PV-4). Lanthanides tended to decrease M-S, with Gd- and Ho-substituted magnetites having the highest magnetization. The higher magnetization of microbially synthesized TM-substituted magnetites by the psychrotroph, PV-4 may be explained by the magnetite formation taking place at low temperatures slowing mechanics, which may alter the magnetic properties compared to the thermophile, through suppression of the random distribution of substituted cations. (c) 2007 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jmmm.2007.01.011

文献信息

• XRD, HRTEM, Raman and magnetic studies on chemically prepared nanocrystalline Fe-doped gadolinium oxide (Gd_1.90Fe_0.10O_3−δ) annealed in vacuum
  作者：B. J. Sarkar、A. K. Deb、P. K. Chakrabarti

  DOI：10.1039/c5ra22867k

  日期：——

  Fe-doped gadolinium oxide (Gd1.90Fe0.10O3−δ) are prepared by a co-precipitation method. To obtain the desired nanocrystalline phase and to enhance the oxygen vacancy, the as prepared sample is annealed at 700 °C for 6 h in vacuum. The pure crystallographic phase is confirmed by Rietveld analysis of the X-ray diffraction (XRD) pattern. High resolution transmission electron microscopy (HRTEM) studies and

  掺铁g氧化物（Gd 1.90 Fe 0.10 O 3− δ的纳米颗粒）是通过共沉淀法制备的。为了获得所需的纳米晶相并增强氧空位，将所制备的样品在700°C的真空中退火6小时。通过X射线衍射（XRD）图的Rietveld分析确认了纯结晶相。在室温下观察到的掺杂样品的高分辨率透射电子显微镜（HRTEM）研究和拉曼光谱也排除了样品中存在任何不需要的杂质相。样品的XRD，HRTEM和拉曼光谱证实了氧化-晶格中Fe离子的完全取代。使用超导量子干涉仪（SQUID）磁力计，可以在300 K至5 K的不同温度下进行静态磁测量。磁化非线性的开始（在约20 K处记录的M）与场（H）曲线证实了在〜20 K及以下时存在磁序。在5 K处观察到清晰的磁滞回线，具有较高的磁化强度（〜120.1 emu g -1）。3D自旋波模型和居里-魏斯定律表明，在〜5 T的施加磁场下，〜20 K及以下时，磁滞回线没有饱和，并且在〜50
• Synthesis and structural characterization of gadolinium—calcium ferrites Gd1-xCaxFeO3-y ()
  作者：J. Li、D. Song、T.M. Wang、Z. Su

  DOI：10.1016/s0925-8388(97)00180-1

  日期：1997.9

  Samples of gadolinium-calcium ferrites Gd1-xCaxFeO3-y with x ranging from 0 to 2/3 were synthesized in air by solid state reaction. The X-ray powder diffraction studies reveal that the produced samples are one-phased orthorhombic perovskite compounds having the space group D-2h(16)-Pbnm. The lattice constants of the Gd1-xCaxFeO3-y samples have been determined by Cohen's least-squares method. The variation of the lattice constants with x is presented. The initial substitution of Ca for Gd gives rise to a decrease of the lattice constants. Further substitution of Ca for Gd has little influence on the lattice dimensions. (C) 1997 Elsevier Science S.A.