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  • 1
    Electronic Resource
    Electronic Resource
    Resistometric and Mössbauer studies on structural relaxation in (Ni,Fe)75Si10B15 metallic glasses (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 68 (1990), S. 2091-2099 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The structural relaxation in (Ni,Fe)75Si10B15 metallic glasses has been studied by measuring resistivity changes and Mössbauer spectra. The sign and magnitude of resistivity changes due to the relaxation depend strongly on the Ni/Fe ratio. The isothermal resistivity changes fit well the nonlinear kinetic form, indicating that the fluctuation of local environments of Ni and Fe atoms is very large and Ni and Fe atoms in Ni-Fe-Si-B metallic glasses are mobile compared with Co and Fe atoms in Co-Fe-Si-B metallic glasses. The compositional dependence and kinetic parameters for reversible resistivity changes and Mössbauer spectra strongly support that the reversible structural relaxation corresponds to the reversible short-range ordering between Ni and Fe atoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.346563
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  • 2
    Electronic Resource
    Electronic Resource
    Observation of collision-induced-dipole absorption bands in strontium–rare-gas mixtures. II. Bands involving high-lying states (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 91 (1989), S. 4499-4503 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We have observed many collision-induced-dipole (CID) absorption bands arising from the transitions between quasimolecular ground and high-lying (n≤10) states in the strontium–rare-gas systems. For each absorption band, we have measured the energy shift of the absorption peak from the energy of the correlating atomic forbidden transition and the effective oscillator strength per unit perturber density fCID/Np. The shift is roughly proportional to the electron scattering length L0 for each rare-gas atom, whereas the fCID/Np is roughly proportional to L20. The shift decreases in general as the principal quantum number n increases, and increases as one goes from the s state to the d state, and to the degenerate manifold state with l≥3. These general features of the shift and fCID/Np are consistent with the predictions by a simple Fermi-potential model, suggesting the important role of the interaction between a Rydberg electron and a rare-gas atom in the CID absorption processes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.456788
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  • 3
    Electronic Resource
    Electronic Resource
    Observation of collision-induced-dipole absorption bands in strontium–rare-gas mixtures. I. The 5s–4d bands (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 91 (1989), S. 4495-4498 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Reduced absorption coefficients have been measured for the collision-induced-dipole (CID) absorption bands associated with the 5s–4d transition of atomic strontium perturbed by He, Ne, Ar, Kr, Xe, and Sr. The main CID absorption band, assigned to 5sΣ–4dΣ, extends from the position of the atomic 5s–4d transition towards the shorter-wavelength side for every perturber. For Xe and Kr, an additional small absorption band is seen at the foot of the atomic 5s–4d transition. The former 5sΣ–4dΣ band is interpreted to result from collisional mixing of the 5p state of atomic Sr into the molecular 4dΣ state for small internuclear separations, while the latter band is interpreted to result from the collisional quadrupole (strontium)–dipole (Xe or Kr) interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.456787
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  • 4
    Electronic Resource
    Electronic Resource
    Electronic polarizability, optical basicity, and interaction parameter of La2O3 and related glasses (2002)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 91 (2002), S. 2942-2950 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The electronic polarizability and optical basicity of La2O3 and related glasses have been determined from ultraviolet absorption spectra and calculations based on the Lorentz–Lorenz equation. The optical basicity for La2O3 oxide is found to be 1.07, being much larger compared with typical glass-forming oxides such as B2O3 (0.42) and SiO2 (0.48) but being similar to heavy element oxides such as TeO2 (0.93). The Yamashita and Kurosawa's interaction parameter of La2O3 is 0.03 Å−3, indicating that La2O3 is classified as a normal ionic (basic) oxide, i.e., an ionic bonding character in the La3+–O bond is proposed. Close correlations are confirmed among optical basicity, interaction parameter, and oxygen 1s binding energy in x-ray photoelectron (XPS) spectra for La2O3–P2O5 and other La2O3-containing glasses. It is found from XPS and Raman spectra that La3+ ions in La2O3–P2O5 glasses act as network modifiers, supporting an ionic bonding character in the La3+–O bond. The parameters related to electronic polarizability in La2O3 determined in the present study would be useful for the design of rare-earth containing optical functional glasses. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1436292
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  • 5
    Electronic Resource
    Electronic Resource
    Superconducting glass ceramics with Tc=100 K based on the Bi-Pb-Sr-Ca-Cu-O system (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 1169-1171 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Superconducting glass ceramics of Bi0.8Pb0.2SrCaCu1.5Oy (sample A) and BiPb0.2SrCaCu1.5Oy (sample B) have been prepared by using the melt quenching method. It was found that the volume fraction of the high Tc phases in sample A annealed at 830 or 840 °C for 250 h was much higher than that in sample B. The annealed (840 °C, 250 h) sample A exhibited superconductivity with a Tc (zero) of 100 K and a critical current density (77 K, zero magnetic field) of 120 A/cm2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.101482
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  • 6
    Electronic Resource
    Electronic Resource
    Second harmonic generation in transparent surface crystallized glasses with stillwellite-type LaBGeO5 (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 5282-5287 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Transparent optical nonlinear crystallized glasses with the composition of 25La2O3 25B2O3 50GeO2, stoichiometric to ferroelectric stillwellite-type LaBGeO5 crystalline phase, have been prepared by a two-step heat-treatment (first heat treatment: T1=670 °C, t1=10 h, second heat-treatment: T2, t2), and their second harmonic (SH) intensities have been examined using the Maker fringe method. The samples obtained by heat treatments at T2=720∼725 °C for t2=3 h show only surface crystallization and exhibit clear and fine (narrow) fringe patterns. The samples heat treated at T2=740 and 750 °C exhibit relatively strong SH intensities, but the fringe patterns in such samples are broad. It is proposed that SH waves generated from surface LaBGeO5 crystalline layers scatter at LaBGeO5 crystals formed in the interior of glass, causing the disappearance of fine fringe patterns. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1360699
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  • 7
    Electronic Resource
    Electronic Resource
    A nonlinear analysis of the kinetics of reversible structural relaxation in Co-Fe based metallic glasses (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 4853-4859 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The kinetics of reversible resistivity changes during structural relaxation in various Co-Fe based metallic glasses was examined using a nonlinear kinetic form Ψ=exp[−(t/τm)n]. It was found that the data excellently fit the nonlinear kinetic form. The compositional dependence of the kinetic parameters (distribution parameter n, activation energy Ea, and preexponential factor τ0) were obtained, and the microscopic mechanism of atomic rearrangements during the relaxation is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341233
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  • 8
    Electronic Resource
    Electronic Resource
    Relationship between changes in compositional short-range order and field-induced anisotropy in amorphous Co58.3Fe4.7Ni10Si11B16 alloy (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 58 (1985), S. 4237-4244 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Relationship between the changes in compositional short-range order (CSRO) and field-induced anisotropy (Ku) was studied in the amorphous zero-magnetostrictive alloy of composition Co58.3Fe4.7Ni10Si11B16, which has an appropriate Curie temperature (Tc) and high-crystallization temperature. Resistivity measurements after quenching from preannealing temperature (TQ) show that the reversible CSRO can be separated from the nonreversible topological short-range order. Resistivity change (Δρ/ρ) and Ku change (ΔKu) were measured isothermally at 250 °C (〈Tc) and also isochronally in the sample quenched from TQ. It was found that [d/Δρ/ρ)/dt]/[d(ΔKu )/dt] is constant and the higher TQ is, the larger both d(Δρ/ρ)/dt and d(ΔKu )/dt are. The approximate theory of the kinetics of both CSRO and Ku were given and it can explain the observed changes in Δρ/ρ and ΔKu. By assuming that the tail of the distribution of sizes of the interstitial sites in the soft-sphere dense random-packing model can act as a vacancylike defect, the formation mechanism of ΔKu which can explain the observed experimental facts was proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.335558
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  • 9
    Electronic Resource
    Electronic Resource
    Electron spin resonance studies on irradiated heterogeneous systems. VIII. Radical cation formation from toluene (1972)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 76 (1972), S. 1721-1726 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100656a008
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  • 10
    Electronic Resource
    Electronic Resource
    Electron spin resonance studies on irradiated heterogeneous systems. IX. Anisotropy of the g factor and the hyperfine coupling constant of the benzene cation in the adsorbed state (1972)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 76 (1972), S. 1727-1728 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100656a009
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