Optical yam ntxwv ntawm Anatase

Anatase yog ib qho ntawm peb lub ntuj siv lead ua ntawm titanium dioxide (TiO₂) (lwm ob yog rutile thiab brookite). Nws belongs rau tetragonal siv lead ua system thiab muaj qhov qhib TiO₆ octahedral qauv. Nws ruaj khov ntawm chav tsev kub tab sis hloov mus rau hauv rutile thaum rhuab mus rau 400-600 degree.

Nws yog xim av, daj, los yog dub, nrog ob peb hom yog xiav lossis ntsuab - grey; cov yeeb yaj kiab nyias yuav tsis muaj xim, lossis lub teeb daj lossis xim av, thiab tuaj yeem nthuav tawm tsis sib xws lossis sib faib. Nws nthuav tawm pleochroism tsis muaj zog: tsis muaj - daj, xiav, ntsuab; ne-xim av, tsaus xiav, ntuj xiav. Cov xim tsaus nti tuaj yeem muaj zog pleochroism. Absorption feem ntau tsis muaj ne. Nws muaj lub siab nyem ntawm qhov zoo electrode, nrog rau qhov tseem ceeb roughness ntawm qhov chaw. Refractive index variations yog pronounced. Piv txwv li, yellow anatase crystals tsis muaj=2.501 thiab ne=2.431; grey specimens tsis muaj=2.556. Cov xim cuam tshuam yog siab heev, ncav cuag qhov kev txiav txim IV los yog siab dua, nrog rau qhov sib npaug lossis sib npaug. Twin crystals, tsis tshua muaj. Tsis zoo ductility. Qhov sib txawv ntawm qhov tsaus ntuj yuav yog cov siv lead ua biaxial nrog lub kaum sab xis me me.