Low-energy lattice excitations in the decagonal Al-Ni-Fe and icosahedral Al-Cu-Fe quasicrystals and the (Al,Si)-Cu-Fe cubic phase

Panova G.K.; Zemlyanov M.G.; Parshin P.P.; Shikov A.A.; Brand R.A.

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Low-energy lattice excitations in the decagonal Al-Ni-Fe and icosahedral Al-Cu-Fe quasicrystals and the (Al,Si)-Cu-Fe cubic phase

机译：十边形Al-Ni-Fe和二十面体Al-Cu-Fe准晶体和（Al，Si）-Cu-Fe立方相的低能晶格激发

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The specific heat of decagonal Al_(71.3)Ni_(24.0)Fe_(4.7) and icosahedral Al_(62)Cu_(25.5)Fe_(12.5) quasicrystals and the Al_(55.0)Si_(7.0)Cu_(25.5)Fe_(12.5) cubic phase approximating the structure of the icosahedral alloy has been studied in the temperature range 4.2-40.0 K. All the three compounds exhibit low coefficients of the electronic heat capacity and pronounced deviations of the low-temperature lattice heat capacity from a cubic temperature law in the range 5-10 K. The results obtained by the thermodynamic method and inelastic neutron scattering have been compared and analyzed. It has been established that, at energies e{open} < 14 meV, the spectral density of thermal vibrations in the icosahedral quasicrystal is substantially higher than those in the cubic approximant and in decagonal quasicrystal.

机译：十边形Al_（71.3）Ni_（24.0）Fe_（4.7）和二十面体Al_（62）Cu_（25.5）Fe_（12.5）准晶体和Al_（55.0）Si_（7.0）Cu_（25.5）Fe_（12.5）的比热在4.2-40.0 K的温度范围内研究了近似二十面体合金结构的立方相。这三种化合物均显示出低的电子热容系数，并且低温晶格热容明显偏离立方温度定律。范围为5-10K。对通过热力学方法和非弹性中子散射获得的结果进行了比较和分析。已经确定的是，在能量e {open} ＜14meV时，二十面体准晶体中的热振动的光谱密度显着高于立方近似晶体和十边形准晶体中的热振动的光谱密度。

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《Physics of the solid state》 |2010年第4期|共5页
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Panova G.K.; Zemlyanov M.G.; Parshin P.P.; Shikov A.A.; Brand R.A.;
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1. Low-energy lattice excitations in the decagonal Al-Ni-Fe and icosahedral Al-Cu-Fe quasicrystals and the (Al,Si)-Cu-Fe cubic phase [J] . Panova G.K., Zemlyanov M.G., Parshin P.P., Physics of the solid state . 2010,第4期

机译：十边形Al-Ni-Fe和二十面体Al-Cu-Fe准晶体和（Al，Si）-Cu-Fe立方相的低能晶格激发
2. Quasicrystals under pressure: a comparison betwen Ti-Zr-Ni and Al-Cu-Fe icosahedral phases [J] . U. Ponkratz, R. Nicula, A. Jianu, Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites . 1999,第Pta2期

机译：准晶体在压力下：Ti-Zr-Ni和Al-Cu-Fe二十面体相的比较
3. Strain-induced structural transformation of single-phase Al-Cu-Fe icosahedral quasicrystal during mechanical milling [J] . N.K.Mukhopadhyaya*F.AlibV.C.SrivastavacT.P.YadavdM.SakaliyskabK.B.SurreddibS.ScudinobV.UhlenwinkeleJ.Eckertbf Philosophical Magazine . 2011,第19a21期

机译：机械研磨过程中单相Al-Cu-Fe二十面体准晶体的应变诱导结构转变
4. fracture mode for self-fragmentation of carbon contaminated icosahedral al-cu-fe and decagonal al-ni-co quasicrystalline phases [C] . Dalian Quasicrystal Workshop . 2000

机译：碳污染的二十面体Al-Cu-Fe和十边形Al-Ni-Co准晶相自碎的断裂模式
5. Structure and phase transformation studies of the icosahedral quasicrystal and related icosahedrally coordinated phases in titanium-zirconium-nickel alloys [D] . Stroud, Rhonda Michele 1996

机译：钛 - 锆 - 镍合金中ICOSAHEDRAL拟替替替替替替替替替替氏型和相关甲素育相协调阶段的结构与相变研究
6. Icosahedral and decagonal quasicrystals of intermetallic compounds are multiple twins of cubic or orthorhombic crystals composed of very large atomic complexes with icosahedral point-group symmetry in cubic close packing or body-centered packing: Structure of decagonal Al6Pd [O] . Linus Pauling 1989

机译：金属间化合物的二十面体和十面体准晶体是立方或正交晶体的多个孪晶由立方密堆积或体心堆积中具有二十面体点群对称的非常大的原子络合物组成：十方Al6Pd结构
7. Icosahedral and decagonal quasicrystals of intermetallic compounds are multiple twins of cubic or orthorhombic crystals composed of very large atomic complexes with icosahedral point-group symmetry in cubic close packing or body-centered packing: Structure of decagonal Al6Pd [O] . Pauling, Linus 1989

机译：金属间化合物的二十面体和十面体准晶体是立方或正交晶体的多个孪晶，由立方密堆积或体心堆积中具有二十面体点群对称的非常大的原子络合物组成：十方Al6Pd结构

Low-energy lattice excitations in the decagonal Al-Ni-Fe and icosahedral Al-Cu-Fe quasicrystals and the (Al,Si)-Cu-Fe cubic phase

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