Magnetic phases in hemo-ilmenite: Insight from low-velocity and high-field Mossbauer spectroscopy
Magnetic phases in hemo-ilmenite: Insight from low-velocity and high-field Mossbauer spectroscopy
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DOI：
10.1029/2006gl029063
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发表时间：
2007-04-12
影响因子：
5.2
通讯作者：
Langenhorst, F.
中科院分区：
文献类型：
--
作者：
Frandsen, C.;Morup, S.;Langenhorst, F.
用穆斯堡尔光谱研究了天然样品中的铁铁矿（含赤铁矿析出片）。样本来自魁北克省的阿拉德湖。钛铁矿主体和赤铁矿片层的化学计量组成分别约为Fe0.842+Mg0.142+Ti0.984+Fe0.043+O3和Fe0.172+Mg0.012+Ti0.184+Fe1.643+O3。通过低速穆斯堡尔测量，初步确定了赤铁矿和钛铁矿不完全溶出形成的Fe2+取代赤铁矿和Fe3+取代钛铁矿的Fe2+和Fe3+组分。在低温下获得的高场穆斯堡尔测量表明存在少量的铁磁成分。
We have studied natural samples of hemo-ilmenite (ilmenite with hematite exsolution lamellae) by use of Mossbauer spectroscopy. The samples are from the Allard Lake intrusion in Quebec. The stoichiometric compositions of the ilmenite host and the hematite lamellae are approximately Fe0.842+Mg0.142+Ti0.984+Fe0.043+O3 and Fe0.172+Mg0.012+Ti0.184+Fe1.643+O3, respectively. From low-velocity Mossbauer measurements, the Fe2+ and Fe3+ components of the Fe2+-substituted hematite and Fe3+-substituted ilmenite, formed by incomplete exsolution of hematite and ilmenite, have been suggested identified. High-field Mossbauer measurements, obtained at low-temperature, indicate the presence of a minor ferrimagnetic component.