Thermodynamic and kinetic parameters of the chemical order–disorder transformation in L10 FeNi (tetrataenite)

Bordeaux, N.; Montes-Arango, A.M.; Liu, J.; Barmak, K.; Lewis, L. H.

doi:10.1016/j.actamat.2015.10.042

Cited by 51 publications

(42 citation statements)

References 47 publications

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“…The FeNi L1 0 structure is a stable phase [9,10] but it is rare in nature, only occurring in meteorites, and it is difficult to synthesize due to the low temperature phase boundary. It has been studied in meteoritic samples [10,11,12] and has been synthesized through neutron bombardment (Néel [13] and Pauleve [14]), electron irradiation (Chamberod [15] and Reuter [16]), in thin film form (Kojima and Mizuguchi [8]), through severe plastic deformation (Lee [17]) and recently through a chemical process (Makino [18]). In all of these methods only very small amounts of the phase are produced.…”

Section: Introductionmentioning

confidence: 99%

Resonant x-ray diffraction revealing chemical disorder in sputtered L1₀FeNi on Si(0 0 1)

Frisk

Lindgren

Pappas

et al. 2016

J. Phys.: Condens. Matter

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Resonant x-ray diffraction revealing chemical disorder in sputtered L10 FeNi on Si(0 0 1). Physics: Condensed Matter, 28(40) Abstract. In the search for new rare earth free permanent magnetic materials, FeNi with the L1 0 structure is a possible candidate. We have synthesized the phase in thin film form by sputtering onto HF-etched Si(001) substrates. Monatomic layers of Fe and Ni were alternately deposited on a Cu buffer layer, all of which grew epitaxially on the Si substrates. A good crystal structure and epitaxial relationship was confirmed by in-house X-ray diffraction (XRD). The chemical order, which to some part is the origin of an uniaxial magnetic anisotropy, was measured by resonant XRD. The 001 superlattice reflection was split in two symmetrically spaced peaks due to a composition modulation of the Fe and Ni layers. Furthermore the influence of roughness induced chemical anti-phase domains on the RXRD pattern is exemplified. A smaller than expected magnetic uniaxial anisotropy energy was obtained, which is partly due to the composition modulations, but the major reason is concluded to be the Cu buffer surface roughness. Journal of

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Section: Introductionmentioning

confidence: 99%

Resonant x-ray diffraction revealing chemical disorder in sputtered L1₀FeNi on Si(0 0 1)

Frisk

Lindgren

Pappas

et al. 2016

J. Phys.: Condens. Matter

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“…The initial work was carried out on the SLM processing of magnetic Fe-Ni alloy by Zhang et al [12][13][14]. Depending on the composition and processing, Fe-Ni alloy can be either a soft magnetic material or in the L1 0 phase as a rare-earth-free alternative for permanent magnets [15,16], thus making Fe-Ni alloy a very interesting material. Later, Moore et al fabricated magnetocaloric La(Fe,Co,Si) 13 geometries by SLM [17].…”

Section: Introductionmentioning

confidence: 99%

Computational study on microstructure evolution and magnetic property of laser additively manufactured magnetic materials

Gutfleisch

2019

Comput Mech

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IAdditive manufacturing (AM) offers an unprecedented opportunity for the quick production of complex shaped parts directly from a powder precursor. But its application to functional materials in general and magnetic materials in particular is still at the very beginning. Here we present the first attempt to computationally study the microstructure evolution and magnetic properties of magnetic materials (e.g. Fe-Ni alloys) processed by selective laser melting (SLM). SLM process induced thermal history and thus the residual stress distribution in Fe-Ni alloys are calculated by finite element analysis (FEA). The evolution and distribution of the γ-Fe-Ni and FeNi 3 phase fractions were predicted by using the temperature information from FEA and the output from CALculation of PHAse Diagrams (CALPHAD). Based on the relation between residual stress and magnetoelastic energy, magnetic properties of SLM processed Fe-Ni alloys (magnetic coercivity, remanent magnetization, and magnetic domain structure) are examined by micromagnetic simulations. The calculated coercivity is found to be in line with the experimentally measured values of SLM-processed Fe-Ni alloys. This computation study demonstrates a feasible approach for the simulation of additively manufactured magnetic materials by integrating FEA, CAL-PHAD, and micromagnetics.

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“…; Albertsen ; Lima and Drago ; Bordeaux et al. ), the properties of the matrix phase are less well constrained. From mass balance and synchrotron studies (Scorzelli ), the matrix composition has been inferred to be in range of 63–87 at% Fe, depending on the method (Miller and Russell ; Rancourt et al.…”

Section: Introductionmentioning

confidence: 99%

A high spatial resolution synchrotron Mössbauer study of the Tazewell IIICD and Esquel pallasite meteorites

Blukis

Rüffer

Chumakov

et al. 2017

Meteorit & Planetary Scien

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Metallic phases in the Tazewell IIICD iron and Esquel pallasite meteorites were examined using 57Fe synchrotron Mössbauer spectroscopy. Spatial resolution of ~10–20 μm was achieved, together with high throughput, enabling individual spectra to be recorded in less than 1 h. Spectra were recorded every 5–10 μm, allowing phase fractions and hyperfine parameters to be traced along transects of key microstructural features. The main focus of the study was the transitional region between kamacite and plessite, known as the “cloudy zone.” Results confirm the presence of tetrataenite and antitaenite in the cloudy zone as its only components. However, both phases were also found in plessite, indicating that antitaenite is not restricted exclusively to the cloudy zone, as previously thought. The confirmation of paramagnetic antitaenite as the matrix phase of the cloudy zone contrasts with recent observations of a ferromagnetic matrix phase using X‐ray photoemission electron spectroscopy. Possible explanations for the different results seen using these techniques are proposed.

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Thermodynamic and kinetic parameters of the chemical order–disorder transformation in L10 FeNi (tetrataenite)

Cited by 51 publications

References 47 publications

Resonant x-ray diffraction revealing chemical disorder in sputtered L1₀FeNi on Si(0 0 1)

Resonant x-ray diffraction revealing chemical disorder in sputtered L1₀FeNi on Si(0 0 1)

Computational study on microstructure evolution and magnetic property of laser additively manufactured magnetic materials

A high spatial resolution synchrotron Mössbauer study of the Tazewell IIICD and Esquel pallasite meteorites

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Thermodynamic and kinetic parameters of the chemical order–disorder transformation in L10 FeNi (tetrataenite)

Cited by 51 publications

References 47 publications

Resonant x-ray diffraction revealing chemical disorder in sputtered L10FeNi on Si(0 0 1)

Resonant x-ray diffraction revealing chemical disorder in sputtered L10FeNi on Si(0 0 1)

Computational study on microstructure evolution and magnetic property of laser additively manufactured magnetic materials

A high spatial resolution synchrotron Mössbauer study of the Tazewell IIICD and Esquel pallasite meteorites

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Product

Resources

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Resonant x-ray diffraction revealing chemical disorder in sputtered L1₀FeNi on Si(0 0 1)

Resonant x-ray diffraction revealing chemical disorder in sputtered L1₀FeNi on Si(0 0 1)