Imaging the three orientation variants of the DO22 phase by 3D atom probe microscopy
Related Experiment Video
Updated: Oct 2, 2026

Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays for High-Throughput Large-Scale Sample Inspection
Published on: June 13, 2023
L Marteau1, C Pareige, D Blavette
1Groupe de Physique des Matériaux UMR 6634 - UFR Sciences, Université de Rouen 76 821 Mont Saint Aignan Cedex, France.
Abstract:
Three-phase NiAlV alloys were investigated using a three-dimensional atom probe. Ageing at 800 degrees C gives rise to the precipitation of two ordered phases within the supersaturated FCC solid solution, namely Ni3Al (L1(2) structure) and Ni3V (DO22 structure). The DO22 phase has three orientation variants which need to be identified in 3DAP images. It is shown that an appropriate choice of analysis site enables us to image the chemical order within both L1(2) and DO22 ordered phases and to distinguish the three orientation variants of the DO22 phase in reconstructed images. The lateral resolution of 3DAP in these experimental conditions was estimated through simple considerations to be less than 0.3 nm.
Related Concept Videos
Atomic Force Microscopy
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
Electron Microscope Tomography and Single-particle Reconstruction
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
Newman Projections
The organic molecules rotate across the single bonds leading to numerous temporary three-dimensional structures of varying energy known as conformers.
Phase Contrast and Differential Interference Contrast Microscopy
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
2D NMR: Overview of Homonuclear Correlation Techniques
COSY90 is the standard two-dimensional (2D) COSY experiment that...
Overview of Microscopy Techniques
