Experimental study of βPbF2 thin films

✍ Scribed by J.D. Pistre; J. Salardenne; P. Smutek

• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 373 KB
• Volume: 22
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(77)80019-4

✦ Synopsis

The high ionic conduction observed in pPbF2 single crystals and sintered samples has led us to study thin films of this compound. The films have been obtained using two methods: thermal evaporation in vacuum and cathode sputtering. The electric study of films involves an original method of admittance vs frequency measurement. The activation energy of conductivity is given for the strnetures in vacuum and when exposing them to the action of oxygen. The results of crystallographic structure studies (by X-rays), the search for impurities and the stoichiometry (by c( partichs retrodiffusion) are given for the two above mentioned methods. The observed variation of fluorine concentration all along the film thickness could be explained if one accepts a conduction by both anions and anion vacancies.