Title :
Laser-induced photothermal transformation of polymer C/sub 3/N/sub 4.25/ material to the stable C/sub 2/N phase
Author :
Kudryashov, S.I. ; Zorov, N.B. ; Kuzyakov, Yu.Ya.
Author_Institution :
Dept. of Chem., Moscow State Univ., Russia
Abstract :
Summary form only given. Production of the superhard /spl beta/-C/sub 3/N/sub 4/ crystalline thin films now is a one of the most promising directions of laser deposition studies. Meanwhile a lot of experimental works usually resulted in C/sub 2/N phase which is proposed to be the most stable crystalline phase of CN materials under elevated temperatures (400-600/spl deg/C) of laser deposition. This thermally stable and insulating phase exhibits diamond-like resistivity with graphite-like carbon hybridization. We have studied the thermodynamic stability of CN materials by laser evaporation of a graphite-like nitrogen-rich polymer C/sub 3/N/sub 4.25/ material.
Keywords :
laser deposition; photochemistry; polymers; thermal stability; thermodynamics; time of flight mass spectra; /spl beta/-C/sub 3/N/sub 4/; 400 to 600 C; C/sub 2/N phase; C/sub 3/N/sub 4.25/; C/sub 3/N/sub 4.25/ material; CN materials; diamond-like resistivity; elevated temperatures; graphite-like C hybridization; insulating phase phase; laser deposition; laser evaporation; laser-induced photothermal transformation; polymer; stable crystalline phase; stable phase; superhard crystalline thin films; thermally stable phase; thermodynamic stability; Crystalline materials; Crystallization; Insulation; Laser stability; Optical materials; Polymer films; Production; Sputtering; Temperature; Thermal resistance;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO '99. Summaries of Papers Presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-595-1
DOI :
10.1109/CLEO.1999.834365
