Interface Analysis in Magnetostrictive Multilayers with 3D Atom Probe

The Challenge

Magnetostrictive multilayer materials—widely used in ultra-sensitive sensors and actuators—offer impressive functionality, but they’re extremely brittle and structurally complex. Understanding ultra-thin, asymmetric interfaces that affect performance requires probing at sub-nanometer scales. Yet traditional analytical methods introduce artifacts, lack quantitation, or compromise fragile samples.

How Atom Probe Solved It

CAMECA’s Atom Probe Tomography (APT) solves this with high-resolution, artifact-free 3D chemical mapping:

• Laser-pulsed analysis enables high-throughput examination of brittle multilayers without mechanical fatigue or specimen rupture.
• FIB-prepared tips extracted from TbCo₂/Fe multilayers reveal layer integrity. 3D reconstructions clearly distinguish Co, Tb, and Fe atoms.
• Precise interface measurement identifies a 1 nm thick Fe/TbCo₂ boundary—thinner than the Fe/Co counterpart—highlighting interdiffusion control by the Tb layer.
• Unmatched benefits over competing techniques:
  • Direct quantitation (equal sensitivity to all elements in periodic table)
  • Sub-nanometer spatial resolution
  • Nanometer-scale localization of composition variations.

These insights offer materials scientists a powerful tool to refine interface design and boost device efficiency.

Ready to Transform Your Materials Research?

Explore atomic-scale breakthroughs in magnetostrictive materials with the CAMECA LEAP 6000XR—the definitive solution for precise APT analysis.

➡ Explore the LEAP 6000XR

Learn more about magnetic materials: Link to APT-17