Abstracts Book - IMRC 2018

• SA6-P006
YAG POWDERS DOPED WITH DIFFERENT RARE EARTH IONS
(YAG:RE, RE= CE 3+ , EU 3+ , ND 3+ AND PR 3+ ) VIA COMBUSTION
SYNTHESIS
Angel Rafael Valenzuela León 1 , Vivian Gudalupe Vargas Bazan 1 , Ana Lucia Lopez Gastelum 1 ,
Rafael Garcia Gutierrez 1
1
Universidad de Sonora, Ingeniería Química y Metalurgia, Mexico.
Yttrium Aluminum Garnet or YAG (Y3Al5O12), which exists in the cubic form with
a garnet structure, is one of the most commonly used phosphor materials
especially as a host for rare earth (RE) ions, due to its thermal and chemical
stability and optical transparency ultraviolet to infrared regions. YAG crystals
doped with RE ions have a wide range of applications in photonics including
state lasers, scintillators, and phosphors, due to the combination of the chemical
stability of YAG at high temperatures (besides being one of the best creepresistant
oxides 2 ) and unique fluorescent properties of RE ions 3 . Yttrium
Aluminum Garnet (YAG) powders doped with rare earth (RE) ions (RE= Ce 3+ , Eu 3+ ,
Nd 3+ and Pr 3+ ) were prepared in this research using a one step combustion
method at low temperature. The combustion synthesis involves the reaction of
aluminum nitrate nonahydrate (Al(NO3)3·9H2O), yttrium nitrate hexahydrate
(Y(NO3)3·6H2O) and the rare earth ion nitrate (RE(NO3)3·6H2O), using
carbohydrazide (CO(N2H3)2) as fuel. The YAG:RE powders obtained are
amorphous as-synthesized; however, these were calcinated at 1000 °C to
achieve their crystalline structure. The resulting products were characterized by
x-ray diffraction (XRD), scanning electron microscopy (SEM) and
photoluminescence (PL) to study their structural, morphological and
luminescence properties. The XRD patterns demonstrated the amorphous
structure of YAG powders at 500 °C (as-synthesized) and their crystalline
structure when calcinated at 1000 °C. The emission spectrums for YAG:RE
powders synthesized in this work, confirms the incorporation of RE ions in the
macroporous YAG network, proof of successful synthesis of YAG:RE powders by
the economic and fast combustion method, using only one type of fuel.
Acknowledgment: Universidad de Sonora
Keywords: YAG powders, rare earth ions, combustion method
Presenting authors email: valenzuelaleon24@gmail.com