Structural investigation of TbCo2/Fe magnetostrictive thin films by tomographic atom probe and Mössbauer spectrometry

Grenier, Adeline; Lardé, R.; Cadel, E.; Breton, J.M. Le; Vurpillot, F.; Tiercelin, Nicolas; Pernod, Philippe; Teillet, J.

doi:10.1016/j.jmmm.2006.10.1102

Cited by 6 publications

(4 citation statements)

References 7 publications

(7 reference statements)

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“…Several Fe and TbCo layers are clearly seen, in agreement with the multilayered structure observed by SEM. The crystallinity of the Fe layers, evidenced by Mössbauer spectrometry and x-ray diffraction measurements, 25 cannot be revealed by the visualization of atomic planes. This can be the case in TAP analysis when there is a misorientation of the grain crystallographic orien-…”

Section: Resultsmentioning

confidence: 99%

Atomic-scale study of TbCo2.5/Fe multilayers by laser-assisted tomographic atom probe

Grenier

Lardé

Cadel

et al. 2007

Journal of Applied Physics

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Sputtered ͑TbCo 2.5 25 nm/Fe 20 nm͒ multilayers have been analyzed by laser-assisted tomographic atom probe. It allowed us to perform three-dimensional reconstructions of the layers and to determine their composition at the atomic scale. From the concentration profiles inside the multilayer, we show that the diffused interfaces are not symmetric and that a stronger Fe-Co mixing is present at the top of the crystalline iron layers as compared to the top of amorphous TbCo layers.

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Section: Resultsmentioning

confidence: 99%

Atomic-scale study of TbCo2.5/Fe multilayers by laser-assisted tomographic atom probe

Grenier

Lardé

Cadel

et al. 2007

Journal of Applied Physics

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“…Very recently, Scott et al (2012) succeeded in recovering the 3D distribution of atoms by electron tomography, although the resolution was anisotropic. Still, the best technique to get the spatial coordinates of atoms together with their identities is APT (Grenier et al, 2007; Miller et al, 2012). Achievable depth resolution is in the 0.1 nm range, while the lateral resolution is slightly worse.…”

Section: Sample Preparationmentioning

confidence: 99%

Specifications for Hard Condensed Matter Specimens for Three-Dimensional High-Resolution Tomographies

et al. 2013

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Tomography is a standard and invaluable technique that covers a large range of length scales. It gives access to the inner morphology of specimens and to the three-dimensional (3D) distribution of physical quantities such as elemental composition, crystalline phases, oxidation state, or strain. These data are necessary to determine the effective properties of investigated heterogeneous media. However, each tomographic technique relies on severe sampling conditions and physical principles that require the sample to be adequately shaped. For that purpose, a wide range of sample preparation techniques is used, including mechanical machining, polishing, sawing, ion milling, or chemical techniques. Here, we focus on the basics of tomography that justify such advanced sample preparation, before reviewing and illustrating the main techniques. Performances and limits are highlighted, and we identify the best preparation technique for a particular tomographic scale and application. The targeted tomography techniques include hard X-ray micro- and nanotomography, electron nanotomography, and atom probe tomography. The article mainly focuses on hard condensed matter, including porous materials, alloys, and microelectronics applications, but also includes, to a lesser extent, biological considerations.

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“…The morphology, the concentration profiles across an interface and the rugosity can thus be obtained. 32,33,35,36,39 …”

Section: Laser Assisted Wide Angle Tomographic Atom Probe: Lawatapmentioning

confidence: 99%

“…This technique, which allows a 3D reconstruction of the analyzed volume at the atomic scale, is a powerful tool to investigate metallic layers and nanostructured alloys in terms of both chemical nature and atomic-scale features such as roughness of the interfaces. [31][32][33][34][35][36] First, we focus on the study of structural properties of high aspect ratio (about 250 nm diameter and about 10 to 30 lm length) Cu 80 Co 20 heterogeneous alloy nanowires prepared by electrochemical deposition via atomic-scale analysis achieved with x-ray diffraction (XRD) and Laser Assisted Wide Angle Tomographic Atom Probe (LAWATAP). Next, we investigate their magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

Atomic-scale investigation and magnetic properties of Cu80Co20 nanowires

Hannour

Lardé

Jean

et al. 2011

Journal of Applied Physics

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Articles you may be interested inMagnetic behavior of NiCu nanowire arrays: Compositional, geometry and temperature dependence J. Appl. Phys. 116, 033908 (2014); 10.1063/1.4890358Post magnetic field annealing effect on magnetic and structural properties of Co80Pt20 nanowires and nanotubes fabricated by electrochemical method J. Appl. Phys. 115, 17A762 (2014); 10.1063/1.4868179Structural and magnetic characterization of as-prepared and annealed FeCoCu nanowire arrays in ordered anodic aluminum oxide templates Cu 80 Co 20 granular alloy nanowires were synthesized by electrodeposition method and investigated by x-ray diffraction (XRD), Laser Assisted Wide Angle Tomographic Atom Probe (LAWATAP), and SQUID magnetometry. XRD results reveal the existence of a fcc Cu matrix and fcc Co-rich nanograins, with a preferred orientation along the [200] direction (perpendicular to the substrate surface). The Co-rich nanograins could be coherent with the Cu matrix. 3D reconstructions of a nano-sized volume, obtained by LAWATAP, reveal the heterogeneous aspect of the Cu 80 Co 20 nanowires: Co-rich nanoclusters with size between 2 and 10 nm are detected, and the presence of Cu and Co oxides is evidenced. Magnetization measurements indicate that the Co-rich nanoclusters are superparamagnetic, with a blocking temperature that extends up to, at least, room temperature. The presence of ferromagnetic domains at room temperature indicates that some Co-rich nanoclusters are correlated within a volume that corresponds to a so-called interacting superparamagnetic phase. As a matter of fact, by LAWATAP atomic-scale analysis, a very good correlation is obtained between microstructure and magnetic properties.

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Structural investigation of TbCo2/Fe magnetostrictive thin films by tomographic atom probe and Mössbauer spectrometry

Cited by 6 publications

References 7 publications

Atomic-scale study of TbCo2.5/Fe multilayers by laser-assisted tomographic atom probe

Atomic-scale study of TbCo2.5/Fe multilayers by laser-assisted tomographic atom probe

Specifications for Hard Condensed Matter Specimens for Three-Dimensional High-Resolution Tomographies

Atomic-scale investigation and magnetic properties of Cu80Co20 nanowires

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