æz ðɪ ˈeɪtʃ slˈæʃ tˈaɪ ɹˈeɪʃɪˌoʊ ɐpɹˈoʊtʃᵻz tˈuː, ðə mətˈɪɹiəl ɐdˈɑːpts ðə bˈeɪɾəfˈɔːɹm tʊ ɐ fˈeɪs sˈɛntəd kjˈuːbɪk ˌɛfsˌiːsˈiː, dˈɛltəfˈɔːɹm, ðɪ ˈeɪtʃ ˈæɾəmz ᵻvˈɛntʃuːəli fˈɪlɪŋ ˈɔːl ðə tˌɛtɹɐhˈiːdɹəl sˈaɪts tə ɡˈɪv ðə lˈɪmɪɾɪŋ stˌoʊɪkɪˈɑːmətɹi ʌv .
As the H/Ti ratio approaches 2, the material adopts the β-form to a face centred cubic (fcc), δ-form, the H atoms eventually filling all the tetrahedral sites to give the limiting stoichiometry of .