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  • 1
    Electronic Resource
    Electronic Resource
    Magnetic and structural transitions in La1−x Sr x MnO3: T-x phase diagram (1998)
    Springer
    JETP letters 68 (1998), S. 356-362 
    Details
    ISSN: 1090-6487
    Keywords: 75.30.Kz ; 61.50.Ks ; 72.20.My ; 75.50.Dd
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The electrical conductivity, magnetic susceptibility, magnetization, and submillimeter (v=5∓20 cm−1) permittivity and dynamic conductivity of La1−x Sr x MnO3 (0≤x≤ 0.45) single crystals are investigated. The anomalies in the temperature dependences of these quantities are identified with diverse magnetic and structural phase transformations, including antiferromagnetic and ferromagnetic ordering, structural transitions between strongly distorted (Jahn-Teller) and weakly distorted (pseudocubic) orthorhombic phases, structural transitions to a rhombohedral phase and unusual transitions to a polaron-ordering state. As a result, the complete T-x phase diagram of the system La1−2x Sr x MnO3 is constructed in a wide interval of temperatures T=4.2∓1050 K and concentrations x=0−0.45.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.567873
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  • 2
    Electronic Resource
    Electronic Resource
    Electrodynamic properties of plane wire grids (1982)
    Springer
    International journal of infrared and millimeter waves 3 (1982), S. 19-43 
    Details
    ISSN: 1572-9559
    Keywords: grid ; diffraction parameter ; sliding point ; back-wave tube ; sublimmimetre BWT-spectroscopy ; resonance method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The method of submillimetre BWT-spectroscopy is used to measure electrodynamic parameters of the grids wound from conductors with circular cross sections. The coefficients of transmission and reflection, reflected wave phase, and ohmic losses in conductors are measured in the range of small values of diffraction parameteræ=D/λ〈1 (λ is the wavelength,D is the grid spacing) for the case where the wave vector E is directed along the conductors (E‖1). In the diffraction region (0.5〈æ〈2.2), transmission spectra of the grids are measured for both polarizations. The data obtained are compared to those of different theoretical methods for describing grid electrodynamics. In particular, the transmission spectra are shown to have some peculiarities in the vicinity of sliding pointsæ=1;2 (E⊥1), unpredicted by corresponding theories.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01007199
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