Dissertation > Excellent graduate degree dissertation topics show

Study on the Preparation, Characterization and Fluorescence Properties of Cr3+,Nd3+:Yagg Laser Ceramic Materials

Author: ZuoLiNa
Tutor: SunJing
School: Changchun University of Science and Technology
Course: Inorganic Chemistry
Keywords: Cr3+,Nd3+:YAGG Laser ceramic materials Coprecipitation method Sol-gel combustion method Energy transfer
CLC: TQ174.1
Type: Master's thesis
Year: 2012
Downloads: 61
Quote: 0
Read: Download Dissertation

Abstract


The synthetic technology of raw materials is the premise and key factors on preparing high performance transparent laser ceramic materials. In this thesis, Cr3+, Nd3+:YAGG ceramic materials were prepared by the Urea coprecipitation, Ammonium bicarbonate anti-drop coprecipitation, Citric acid sol-gel combustion method and EDTA-Citric acid sol-gel combustion method. The phase change process, composition, morphologies and fluorescence properties of the samples were characterized by XRD, TG-DTA, IR, SEM and fluorescence spectra. The results of XRD, TG-DTA and IR indicated that the pure YAGG powders were obtained when the samples were calcined at800℃for4h. SEM images reveal that the Cr3+, Nd3+:YAGG samples are one-dimensional with a diameter of60nm, which the samples were prepared by EDTA-citric acid sol-gel combustion method, but the particle size was smallest when the samples were prepared via Urea coprecipitation, its particle size is about30nm and its dispersion is poor. Meanwhile, the different burners had different effects on the morphology and particle size of the samples.The fluorescence spectrum showed that the strongest emission peaks of the samples is1064nm, correspondingto4F3/2-4I11/2transition of Nd3+. And the energy transfer from Cr3+to Nd3+was observed.

Related Dissertations

  1. Synthesis and Optical Properties Study of Ce 3+ - Doped , Ce3+ , Tb 3+ -codoped 12CaO·7Al2O 3,O482.31
  2. Preparation and Luminescence Properties of Blue-emitting NaxK1-xSrPO4:Re (Re=Eu2+, Tb3+) Phosphors,O482.31
  3. Synthesis and Luminescence Properties of Gd, Eu Co-doped LaPO4,O614.331
  4. Synthesis and Properties of One-Dimnesional Nanosgructural Rare Eath Oxides and Vanadates Via Electrospining Process,TB383
  5. The Research on Preparation Technology and Sintering Behavior of Rare Earth Aluminates (Dy3Al5O12、 NdAlO3、LaAl11O18),TB383.3
  6. Research on a Wireless Charging System Based on Strongly Coupled Magnetic Resonance,TM724
  7. Analysis and Calcaulation of Non-Contact Power Transfer Sytem for Multi-Users,TM724
  8. Luminescent Properties of Near UV Excitable Phosphors Based on Broates or Chlorobroates,O611.3
  9. The Design and Implementation of A Transcutaneous Charging Circuit Based on Electromagnetic Coupling,TH789
  10. Based on the spectrum of rare earth doped materials under conversion and Its Application,TM914.4
  11. Based on hydraulic transmission for wind energy machine \,TM614
  12. TBM cutterhead drive system energy technology research,U455.39
  13. Wireless Power Transfer Technology Via Coupled Magnetic Resonances for Embedded Fault Diagnosis System,TM724
  14. Synthesis and Luminous Properties of Europium-doped Borate Blue Phosphors,O482.31
  15. Synthesis and Luminescent Properties of Rare Earth Doped Molybdate Phosphors Materials for Light Emitting Diodes,TN312.8
  16. Study on Synthesis and Magnetism of Flake Shaped BaFe12O19,TB383.1
  17. Functional Molecular Machines Based on Crown Ether Derivatives,O621.1
  18. La 0.5 Sr 0.5 Preparation and Characterization MnO 3 perovskite -type oxides,O611.4
  19. Investigation of the Luminescence of Ce4+/Eu3+ Doped Alkaline Strannates,O482.31
  20. Study on the Photoluminescence Properties of Gd2O3:Sm and Bi3+/Na+ Doped Gd2O3:Sm Nanocrystals,TB383.1
  21. Preparation and Luminescent Properties of Rare Earth Ion Doped Nanocrystalline ZrO2-Al2O3 Composite Powder,TB383.1

CLC: > Industrial Technology > Chemical Industry > Silicate > Ceramic Industry > Basic theory
© 2012 www.DissertationTopic.Net  Mobile