Spin crossover in (Mg,Fe)O: A Mossbauer effect study with an alternative interpretation of x-ray emission spectroscopy data

被引：58
作者：
Kantor, IY [1 ]
Dubrovinsky, LS [1 ]
McCammon, CA [1 ]
机构：
[1] Univ Bayreuth, Bayer Geoinst, D-95440 Bayreuth, Germany
来源：
PHYSICAL REVIEW B | 2006年 / 73卷 / 10期
关键词：
D O I：
10.1103/PhysRevB.73.100101
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A high-pressure Mossbauer spectroscopy study of a spin crossover in (Mg0.8Fe0.2)O ferropericlase is presented. A low-spin subspectral component appears at about 55 GPa, but there is a significant pressure region over which both high-spin and low-spin states are stable, before the high-spin component disappears completely above 100 GPa. These results are only partly consistent with recent x-ray emission spectroscopy (XES) results, and the discrepancy is likely due to assumptions used in analyzing the XES data that are not fully satisfied at high pressure. An alternative method of XES data analysis based on spectral decomposition is presented, which is fully consistent with the Mossbauer data and allows the extraction of additional information from the XES data.
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页数：4
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共 13 条
  • [1] Iron partitioning in Earth's mantle:: Toward a deep lower mantle discontinuity
    Badro, J
    Fiquet, G
    Guyot, F
    Rueff, JP
    Struzhkin, VV
    Vankó, G
    Monaco, G
    [J]. SCIENCE, 2003, 300 (5620) : 789 - 791
  • [2] Electronic transitions in perovskite:: Possible nonconvecting layers in the lower mantle
    Badro, J
    Rueff, JP
    Vankó, G
    Monaco, G
    Fiquet, G
    Guyot, F
    [J]. SCIENCE, 2004, 305 (5682) : 383 - 386
  • [3] Magnetism in FeO at megabar pressures from X-ray emission spectroscopy
    Badro, J
    Struzhkin, VV
    Shu, JF
    Hemley, RJ
    Mao, HK
    Kao, CC
    Rueff, JP
    Shen, GY
    [J]. PHYSICAL REVIEW LETTERS, 1999, 83 (20) : 4101 - 4104
  • [4] GUTLICH P, 1994, ANGEW CHEM, V106, P2106
  • [5] GUTLICH P, 1978, MOSSBAUER SPECTROSCO
  • [6] Mossbauer spectroscopic study of pressure-induced magnetisation in wiistite (FeO)
    Kantor, IY
    McCammon, CA
    Dubrovinsky, LS
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 376 (1-2) : 5 - 8
  • [7] Spin transition of iron in magnesiowustite in the Earth's lower mantle
    Lin, JF
    Struzhkin, VV
    Jacobsen, SD
    Hu, MY
    Chow, P
    Kung, J
    Liu, HZ
    Mao, HK
    Hemley, RJ
    [J]. NATURE, 2005, 436 (7049) : 377 - 380
  • [8] CALIBRATION OF THE RUBY PRESSURE GAUGE TO 800-KBAR UNDER QUASI-HYDROSTATIC CONDITIONS
    MAO, HK
    XU, J
    BELL, PM
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1986, 91 (B5): : 4673 - 4676
  • [9] Rueff J.-P., COMMUNICATION
  • [10] Pressure-induced high-spin to low-spin transition in FeS evidenced by x-ray emission spectroscopy
    Rueff, JP
    Kao, CC
    Struzhkin, VV
    Badro, J
    Shu, J
    Hemley, RJ
    Hao, HK
    [J]. PHYSICAL REVIEW LETTERS, 1999, 82 (16) : 3284 - 3287
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