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浮区法生长Yb_3Fe_5O_(12)晶体及其磁光特性
作者:郑红 陈颂 张蕴芝 夏鸿昶 张雪梅 张道范 姜彦岛 
单位:中国科学院物理研究所  中国科学院物理研究所  中国科学院物理研究所  中国科学院物理研究所  中国科学院物理研究所  中国科学院物理研究所  中国科学院物理研究所 
关键词:(?)铁石榴石  磁光晶体  光隔离器  浮区法  晶体生长  Faraday旋转 
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出版年,卷(期):页码:1993,21(4):326-332
DOI:
摘要:
用移动熔剂浮区法研究从Yb_2O_3-Fe_2O_3体系中生长Yb_3Fe_5O_(12)的可能性,分析了Yb_3Fe_5O_(12)为唯一固相区域内的大致相关系。找出了合适的助熔剂配比(Yb_2O_3: Fe_2O_3=20:80)及晶体的生长条件。并生长出了Yb_3Fe_5O_(12)单晶。测量了诙晶体的磁光性能,在λ>1.3μm时,其Faraday旋转角θ_F不随波长增加而改变。同时,在Y_3Fe_5O_(12)中掺入Yb可得到θ_F的温度系数为零的晶体。
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In this report, possibility of obtaining Yb_3Fe_5O_(12) crystals grown from Yb_2O_3-Fe_2O_3 system is studied using travel floating zone method. The phase relationship near the field of Yb_3Fe_5O_(12) which is the sole phase in the Yb_2O_3-Fe_2O_3 is analysed and appropriate ratio of flux and growth parameter for growing Yb_3Fe_5O_(12), single crystals is described. Magnet-optic properties of the Yb_3Fe_5O_(12) crystals obtained are meao sured.
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参考文献:
1 Crossley W A, et al. Faraday rotation in rare-earth iron garnet. Phys Rev, 1969; 181: 393~398 2 Hidetoshi lwamura, et al. A compact optical isolator using a Y_3Fe_5O_(12) crystal for near infrared radiation. Optical and Electronics, 1978; 10: 393~398 3 Tien P K, et al. Magneto-optics and motion of the magnetization in a film-waveguide optical switch. J Appl Phys, 1974; 45: 3059 4 Hlawiczka P. Gyrotropic wsveguide switching element at optical wavelengths. Electron Lett, 1979; 15: 109 5 Booth R C, et al. Magneto-optic properties of rare-earth iron garnet crystals in the wavelength range 1. 1~1. 7 m and their use in device fabrication. J Phys D: Appl Phys, 1984: 17: 579~587 6 Van Hook H G. Phase relations in the ternary system Fe_2O_3-FeO-YFeO_3. J Am Ceram Soc, 1962; 45: 162. 7 Nielsen J W, et al. Grystal growth and phase equilibrium studies in the system (R. E.)_2O_3-Fe_2O_3. J Cryst Growth, 1972; 13/14: 702~705 8 郑红,张蕴芝等,浮区法Y_3Fe_5O_(12) 晶体生长及特性.人工晶体学报.1990;19(3) :205
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