Feb, 2014
064206Structural, magnetic and electronic state characterization of L1(0)-type ordered FeNi alloy extracted from a natural meteorite
JOURNAL OF PHYSICS-CONDENSED MATTER
- Volume
- 26
- Number
- 6
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1088/0953-8984/26/6/064206
- Publisher
- IOP PUBLISHING LTD
To understand the hard magnetism of L1(0)-type ordered FeNi alloy, we extracted the L1(0)-FeNi phase from a natural meteorite, and evaluated its fundamental solid-state properties: sample composition, magnetic hysteresis, crystal structure and electronic structure. We executed multidirectional analyses using scanning electron microscopy with an electron probe micro-analyzer (SEM-EPMA), a superconducting quantum interference device (SQUID), x-ray diffraction (XRD) and magnetic circular dichroism (MCD). As a result, we found that the composition was Fe: 50 : 47 +/- 1 : 98 at.%, Ni: 49 : 60 +/- 1 : 49 at.%, and an obvious superlattice peak is confirmed. The estimated degree of order was 0.608, with lattice constants a = b = 3 : 582 angstrom and c = 3 : 607 angstrom. The obtained coercivity was more than 500 Oe. MCD analysis using the K absorption edge suggests that the magnetic anisotropy could originate from the orbital magnetic moment of 3d electrons in Fe; this result is consistent with that in a previous report obtained with synthetic L1(0)-FeNi.
- Link information
- ID information
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- DOI : 10.1088/0953-8984/26/6/064206
- ISSN : 0953-8984
- eISSN : 1361-648X
- Web of Science ID : WOS:000330719100007