caa a22 4500 463217314 CHVBK 20180405153201.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s00269-006-0134-6 doi (NATIONALLICENCE)springer-10.1007/s00269-006-0134-6 Effect of incorporation of iron and aluminum on the thermoelastic properties of magnesium silicate perovskite [Elektronische Daten] [Norimasa Nishiyama, Takehiko Yagi, Shigeaki Ono, Hirotada Gotou, Tatsuhiko Harada, Takumi Kikegawa] In situ X-ray diffraction measurements of Fe- and Al-bearing MgSiO3-rich perovskite (FeAl-Pv), which was synthesized from a natural orthopyroxene, were performed at pressures of 19-32GPa and temperatures of 300-1,500K using a combination of a Kawai-type apparatus with eight sintered-diamond anvils and synchrotron radiation. Two runs were performed using a high-pressure cell with two sample chambers, and both MgSiO3 perovskite (Mg-Pv) and FeAl-Pv were synthesized simultaneously in the same cell. Thus we were able to measure specific volumes (V/V 0) of Mg-Pv and FeAl-Pv at the same P−T conditions. At all the measurement conditions, values of the specific volume of FeAl-Pv are consistent with those of Mg-Pv within 2 Standard Deviation, strongly suggesting that effect of incorporation of iron and aluminum on the thermoelastic properties of magnesium silicate perovskite is undetectable in this composition, pressure, and temperature range. Two additional runs were performed using a high-pressure cell that has one sample chamber and unit-cell volumes of FeAl-Pv were measured at pressures and temperatures up to 32GPa and 1,500K, respectively. All the unit-cell volume data of FeAl-Pv perovskite were fitted to the high temperature Birch-Murnaghan equation of state and a complete set of thermoelastic parameters of this perovskite was determined with an assumption of K′ 300,0=4. The determined parameters are K 300,0=243(3)GPa, (∂K T,0/∂T) P =−0.030(8)GPa/K, a 0=2.78(18)×10−5K−1, and b 0=0.88(28)×10−8K−2, where a 0 and b 0 are the coefficients of the following expression describing the zero-pressure thermal expansion: α T,0=a 0+b 0 T. The equation-of-state parameters of FeAl-Pv are in good agreement with those of MgSiO3 perovskite at the conditions corresponding to the uppermost part of the lower mantle. Springer-Verlag, 2006 Mg-perovskite nationallicence Incorporation of Fe and Al nationallicence In-situ X-ray diffraction nationallicence Equation of state nationallicence Lower mantle nationallicence Nishiyama Norimasa Institute for Solid State Physics, The University of Tokyo, 277-8581, Kashiwa, Japan aut Yagi Takehiko Institute for Solid State Physics, The University of Tokyo, 277-8581, Kashiwa, Japan aut Ono Shigeaki Institute for Solid State Physics, The University of Tokyo, 277-8581, Kashiwa, Japan aut Gotou Hirotada Institute for Solid State Physics, The University of Tokyo, 277-8581, Kashiwa, Japan aut Harada Tatsuhiko Institute for Solid State Physics, The University of Tokyo, 277-8581, Kashiwa, Japan aut Kikegawa Takumi Institute of Materials Structure Science, High Energy Accelerator Research Organization, 305-0801, Tsukuba, Japan aut Physics and Chemistry of Minerals Springer-Verlag 34/3(2007-04-01), 131-143 0342-1791 34:3<131 2007 34 269 https://doi.org/10.1007/s00269-006-0134-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00269-006-0134-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nishiyama Norimasa Institute for Solid State Physics, The University of Tokyo, 277-8581, Kashiwa, Japan aut NATIONALLICENCE 700 1- Yagi Takehiko Institute for Solid State Physics, The University of Tokyo, 277-8581, Kashiwa, Japan aut NATIONALLICENCE 700 1- Ono Shigeaki Institute for Solid State Physics, The University of Tokyo, 277-8581, Kashiwa, Japan aut NATIONALLICENCE 700 1- Gotou Hirotada Institute for Solid State Physics, The University of Tokyo, 277-8581, Kashiwa, Japan aut NATIONALLICENCE 700 1- Harada Tatsuhiko Institute for Solid State Physics, The University of Tokyo, 277-8581, Kashiwa, Japan aut NATIONALLICENCE 700 1- Kikegawa Takumi Institute of Materials Structure Science, High Energy Accelerator Research Organization, 305-0801, Tsukuba, Japan aut NATIONALLICENCE 773 0- Physics and Chemistry of Minerals Springer-Verlag 34/3(2007-04-01), 131-143 0342-1791 34:3<131 2007 34 269 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer