{
  "alternatives": [
    {
      "category": "optical",
      "conditions": {
        "mechanical_boundary": "T"
      },
      "id": "eo-r22-T/cln/volk2008-yonekura2007",
      "kind": "scalar",
      "name": "Electro-optic coefficient r22, unclamped",
      "notes": "Labelled 'constant stress (clamped)' in the source, which contradicts itself (constant stress = unclamped, T); the magnitude fits T values. CLN:5%Mg 6.2 and near-SLN:1.8%Mg 6.97 pm/V in the same report.",
      "property": "eo-r22-T",
      "provenance": {
        "locator": "p. 150",
        "original_reference": "Yonekura et al., Opt. Rev. 14, 194 (2007)",
        "source_id": "volk2008",
        "status": "P-comp",
        "transcribed": "2026-10-25"
      },
      "public": true,
      "symbol": "r22^T",
      "tensor_component": "r22",
      "unit": {
        "display": "pm/V",
        "ucum": "pm/V"
      },
      "value": 6.54,
      "variant": "cln"
    }
  ],
  "meta": {
    "api_version": "v1",
    "attribution": "lithium-niobate.com data compiled by Wentao Jiang; cite the original sources listed per value.",
    "data_version": "0.1.0",
    "documentation": "https://lithium-niobate.com/api/openapi.json",
    "license": {
      "id": "CC-BY-4.0",
      "name": "Creative Commons Attribution 4.0 International",
      "url": "https://creativecommons.org/licenses/by/4.0/"
    },
    "property": "eo-r22-T",
    "variant": "cln"
  },
  "recommended": [],
  "recommended_note": "No single recommended record: sources disagree or none is primary; see alternatives and spread.",
  "spread": null
}