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The triple point of iron investigated by high pressure–high temperature neutron scattering
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10.1063/1.2976128
/content/aip/journal/apl/93/9/10.1063/1.2976128
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/9/10.1063/1.2976128

Figures

Image of FIG. 1.
FIG. 1.

Gasket-anvil assembly for high P/T neutron diffraction used in the experiments. (1) anvil, (2) toroidal gasket (CuBe), (3) MgO layer, (4) baked phyrophillite, (5) graphite furnace, (6) MgO disk, (7) sample (iron), (8) Ta foil, (9) Hf foil, (10) electrical contacts (stainless steel). The sample (Fe, 99.99% purity from Alfa Aesar) consists of two cylindrical rods of 3.5 mm diameter with the Ta foil between them. The directions of incident and diffracted beams are indicated by thick gray arrows. The photographs below show the assembly from above, before (left) and after (right) the experiment.

Image of FIG. 2.
FIG. 2.

Neutron diffraction patterns of iron at three different P/T conditions as indicated in the inset next to each spectrum. The line is a fit to the data (dots), difference plots and tick marks are given below (lower panel: upper, middle and lower tick marks correspond to - and -phases, respectively). The accumulation times are , and for the upper, middle and lower pattern, respectively.

Tables

Generic image for table
Table I.

Molar volumes of -, − and -iron at various P/T conditions (values in brackets denote corresponding volume phase fractions).

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/content/aip/journal/apl/93/9/10.1063/1.2976128
2008-09-03
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The α−γ−ε triple point of iron investigated by high pressure–high temperature neutron scattering
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/9/10.1063/1.2976128
10.1063/1.2976128
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