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Updated: Jun 27, 2026

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy
Published on: July 28, 2020
Thermostructural and elastic properties of Ni3V2O8, exhibiting a kagome layer arrangement: experimental study in the
Fiza Aziz1, Roman Minikayev1, Christine Martin2
1Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, Warsaw 02-668, Poland.
Abstract:
Thermal expansion of the kagome-structured nickel orthovanadate (Ni3V2O8) is studied over a wide temperature range (15-1323 K). Using powder X-ray diffraction, we demonstrate that the material retains its orthorhombic symmetry (Cmca) throughout the entire temperature range, while exhibiting pronounced structural anisotropy. Our analysis reveals a striking contrast in the thermal response of the crystal's building blocks: while the VO4 tetrahedra remain nearly rigid, the nickel-centered octahedra (Ni1O6 and Ni2O6) undergo significant expansion (∼6%). This disparity highlights complex lattice dynamics in which the expansion trend (αa > αc > αb) directly mirrors the material's compressibility. These findings provide critical insights into the stability and structural behavior of kagome-type oxides under extreme thermal conditions.
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