Well-arranged electrical charges in BiNiO3 subjected to high pressure at low temperatures are disrupted, leading to a charge glass state

https://phys.org/news/2025-03-discovery-pressure-driven-amorphization-material.html

"perovskite oxide BiNiO3 usually maintains Bi3+ and Bi5+ ions in columnar order... at 4 - 5 GPa and <200°K pattern collapses, resulting in various transformations: charge transfer, charge disproportionation, charge amorphization (random distribution of electrical charges)... enables design of materials with unusual properties: negative thermal expansion (when heating under pressure transitions to metallic state accompanied by reduced volume), magnetocaloric effect... devices needing precise control (sensors)"