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[1] Multianvil experiments with long experimental durations have been made with the anorthite composition CaAl 2 Si 2 O 8 at pressure-temperature (P-T) conditions of 14-25 GPa and 1400-2400 C. At subsolidus conditions, these experiments demonstrated three phase assemblages, grossular (Gr) + kyanite (Ky) + stishovite (St) at $14 GPa, Gr + calcium-alumino-silicate phase (CAS) + St at $18 GPa, and CAS + CaSiO 3 -perovskite (CaPv) + St at above $20 GPa, which are related by the reactions Gr + Ky = CAS + St and Gr + St = CAS + CaPv. Following the method of Schreinemakers, we combined our data with the literature data to deduce a P-T phase diagram for a portion of the CaO-Al 2 O 3 -SiO 2 system at subsolidus conditions, which subsequently helped to solve some long-lasting discrepancies in the high-P behavior of the compositions of anorthite and grossular. The crystal chemistry of the CAS and CaPv solid solutions was examined, and new substitution mechanisms were firmly established. Along the solidus, the melting reaction at $14 GPa is peritectic while that at $22 GPa is eutectic. For both pressures, St is the first phase to melt out and the melt is generally andesitic. For the An composition, its density starts to be significantly higher than the density of pyrolite at $2.5 GPa, a much lower pressure than that for the Or, Ab or Qtz composition ($7.5-10 GPa), so that the An-enriched continental crust material should readily plunge into the upper mantle.Citation: Liu, X., H. Ohfuji, N. Nishiyama, Q. He, T. Sanehira, and T. Irifune (2012), High-P behavior of anorthite composition and some phase relations of the CaO-Al 2 O 3 -SiO 2 system to the lower mantle of the Earth, and their geophysical implications,

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We measure systematically the intrinsic scaling behavior of dynamic hysteresis for Pb(0.9)Ba(0.1)(Zr(0.52)Ti(0.48))O(3) (PBZT) ferroelectric thin films with Pt electrodes on Si substrates, utilizing the Sawyer-Tower technique. For the as-prepared thin films of similar thickness and microstructure, over the low frequency range, the scaling follows the power law [Formula: see text] under low E(0) and the power law [Formula: see text] under high E(0), where ⟨A⟩ is the hysteresis area, and f and E(0) are the frequency and amplitude of the external electric field. In the high- f range, the power law for low E(0) takes the form of [Formula: see text], while that for high E(0) takes the form of [Formula: see text]. It is identified that the dynamic behaviors at low frequency mainly come from the intrinsic domain reversal instead of others like the leakage current, while the depolarization field may influence the frequency exponents at high frequency. We study the temperature scaling of the hysteresis, indicating that the scaling under low E(0) is roughly consistent with the (Φ(2))(2) model. Finally, we argue that experimentally obtained power law scaling for Pb(Zr(0.52)Ti(0.48))O(3) thin films prepared under the given conditions may not be reliable due to the polarization fatigue effect.

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