Altered layer

{
  "id": "MLC-T-CHM-000450",
  "term": "Altered layer",
  "field": "Chemistry",
  "definition": "A region near the surface of a solid material that has undergone changes in its chemical composition or physical structure due to external influences. These changes can result from processes such as ion bombardment, chemical reactions, or environmental exposure. The altered layer often exhibits different properties compared to the bulk material, affecting surface analysis techniques.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "depth resolution parameter",
    "projected range",
    "secondary-ion mass spectrometry"
  ],
  "references": [
    "PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1796 (https://doi.org/10.1515/pac-2019-0404)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/altered-layer/"
}