kristallpanjara
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mavzu: kristall panjara. kristall panjaraning garmonik tebranishlari. kordiantsion son. mavzu: kristall panjara. kordiantsion son. kristall panjaraning garmonik tebranishlari. kristall panjaralarning asosiy kattaliklaridan biri koordinatsion sondir. koordinatsion son panjara tugunida joylashgan atomning eng yaqin o‘rab turgan atomlari soni bilan baholanib, u 1,2,3,….,n tagacha bo‘lishi mumkin (1.a- rasm). oddiy kub kristall panjarada har-bir atomini oltita eng yaqin qo‘shni bo‘lgan atomi o‘rab turadi. bu holat birinchi tartibli koordinatsion son deyiladi va u panjara doimiysi -a, ya’ni ikkita qo‘shni atom orasidagi masofa bo‘lib atomlar soni 6 ga teng (1.b- rasm). xuddi shunday ikkinchi, uchunchi va n- tartibdagi koordinatsion sonlarni aniqlash mumkin. kristallda ko‘rilayotgan atomning qay...
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