取代对 Gd2Fe14−xMxC 化合物中 3d 磁性的影响,其中 M = Ni、Si、Cu 或 V
摘要:
摘要 提供了对 Gd 2 Fe 14- x M x C 化合物进行磁测量和 57 Fe Mossbauer 光谱的结果,其中 M = Ni、Si、Cu 或 V。由于 M 取代了 Fe,六个晶体学上不等价的铁位点分裂为七个不等价位点,M = Si、Cu、V,或八个不等价位点 M Ni。超精细场和相对强度的分析支持替代元素在 Fe 晶格位点上的优先分布。基于优先占位的 Fe 位点,讨论了置换元素对居里温度和各向异性场以及 Fe 超精细参数的影响。
DOI:
10.1016/0925-8388(96)02235-9
作为产物:
描述:
iron pentacarbonyl 以
neat (no solvent, gas phase) 为溶剂,
生成 iron carbide
Near-infrared diode laser spectroscopy of free radicals
作者:Nobukimi Ohashi、Masaharu Fujitake
DOI:10.1016/j.saa.2003.11.051
日期:2004.12
the radicals HCSi, CCO, and FeC obtained by studying in detail energy level structures using 0.8 microm diodelaser system are reported. Of these radicals, the CCO radical was investigated mainly using Fabry-Perot type diodelasers with inconvenient mode gaps in the early stage of our near-infrareddiodelaser spectroscopic study of free radicals, and on the other hand, the FeC and HCSi radicals were
Effect of Phosphorus Content on Mechanical Properties of Electrodeposited Fe-C-P Alloys
作者:N. Miyamoto、K. Yoshida、M. Matsuoka、J. Tamaki
DOI:10.1149/1.1785798
日期:——
Fe-C-Palloy films were electrodeposited from an iron (II) chloride solution containing citric acid and phosphinic acid (hypophosphorous acid) at 323 K. Effect of phosphoruscontent on mechanicalproperties such as Vickers hardness, fracture toughness, and wear resistance was systematically examined and changes in mechanicalproperties were discussed based on the data measured by X-ray diffraction
Fe-CP 合金薄膜由含有柠檬酸和次膦酸(次磷酸)的氯化铁 (II) 溶液在 323 K 下电沉积而成。 系统地研究了磷含量对机械性能(如维氏硬度、断裂韧性和耐磨性)的影响并根据 X 射线衍射、X 射线光电子能谱和扫描电子显微镜测量的数据讨论了机械性能的变化。公开了Fe-CP合金膜具有具有体心四方结构的马氏体相。从维氏硬度、断裂韧性和耐磨性的测量结果判断,Fe-CP 合金与 Fe-C 合金相比显示出优异的机械性能。随着镀液中次膦酸浓度的增加,薄膜的氧含量显着降低。向电解液中加入次膦酸是降低薄膜氧含量的有效方法。Fe-CP 合金薄膜优异的耐磨性与更高的硬度和更高的断裂韧性有关,这是由于磷的共沉积降低了薄膜的氧含量。
Significant Zero Thermal Expansion Via Enhanced Magnetoelastic Coupling in Kagome Magnets
coefficient of thermalexpansion av as small as 2.4 ppm K−1 in a broad temperature range of 85–245 K is discovered in Hf0.85Ta0.15Fe2C0.01 magnet. It is demonstrated that the addition of trace interstitial atom C into Ta-substituted Hf0.85Ta0.15Fe2 exhibits significant capability to tune the normal positive thermalexpansion into high-performance ZTE viaenhancedmagnetoelasticcoupling in stabilized
零热膨胀(ZTE)合金作为尺寸稳定的材料,在许多领域,特别是高度先进的现代工业中迫切需要。在这项研究中,在 Hf 0.85 Ta 0.15 Fe 2 C 0.01磁体中发现了在 85–245 K 的宽温度范围内具有小至 2.4 ppm K −1的热膨胀系数a v可忽略不计的高性能 ZTE 。证明了在Ta取代的Hf 0.85 Ta 0.15 Fe 2中加入痕量间隙原子C通过在稳定的铁磁结构中增强的磁弹性耦合,表现出将正常的正热膨胀调整为高性能中兴通讯的显着能力。此外,通过洛伦兹透射电子显微镜直接观察铁磁态和三角反铁磁态之间的磁转变,以及相应的理论计算,进一步揭示了 ZTE 和负热膨胀的操纵机制。基于磁性能和晶体结构之间的强相关性,一种优化热膨胀并通过间隙 C 添加实现 ZTE 的方便有效的方法可能会导致应用范围的扩大。
Mössbauer study of Gd2Fe17C2.0 compound by the melt quenching
作者:Ji-Jun Sun、De-Sheng Xue、Xiao-Zhou Zhang、Fa-Shen Li、Bao-Gen Shen、Lin-Shu Kong、Lei Cao
DOI:10.1016/0038-1098(93)90717-2
日期:1993.3
Carbide of composition Gd2Fe17Cx compound with higher carbon concentration x = 2 was successfully prepared by the meltquenching. Fe-57 Mossbauer spectra of the carbides (x = 0, 1, 2) were measured at room temperature, the results show that the changing tendency of average hyperfine field and isomer shift is consistent with that of the carbides with x < 1.5. The effects of the interstitial carbon atoms
Excellent soft-ferromagnetic bulk glassy alloys with high saturation magnetization
作者:Baolong Shen、Masahiro Akiba、Akihisa Inoue
DOI:10.1063/1.2189910
日期:2006.3.27
The development of Fe-based bulkglassyalloys (BGAs) with high glass-forming ability has become a very hot research topic, not only because of the soft-magneticproperties, but also of the high fracture strength. Here we report the discovery of excellent soft-ferromagnetic BGAs in FeMoPCBSi system, without the expensive element Ga, which can be cast into glassyalloy rods with diameters range up to