Magnetic and structural α-ε phase transition in Fe by X-Ray Emission Spectroscopy (XES) (CAT#: STEM-ST-0276-WXH)

Name: Magnetic and structural α-ε phase transition in Fe by X-Ray Emission Spectroscopy (XES)
SKU: STEM-ST-0276-WXH
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Introduction

Iron, and specifically iron under extreme conditions of high pressure and temperature, is an element of great importance for its geophysical and practical implications. At room temperature and with increasing pressure, iron shows a phase transition from a bcc (a) phase to a hcp (e) phase at a pressure of '130 kbar. This transition is found to take place in a '30-kbar pressure interval. Besides the structural phase transition, one finds also an important change in the magnetic properties of the iron atom: namely iron which is ferromagnetic in the a phase becomes nonmagnetic in the e phase.

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Principle Applications Materials

Principle

XES is an element-specific method primarily used to analyze the partially occupied electronic structure of materials. The technique is one of the photon-in-photon-out spectroscopies in which an incident X-ray photon is used to excite a core electron, which leads to the transition of the electron from the ground state to the excited state, and then the excited state of the electron decays with the emission of an X-ray photon in order to fill the core hole.