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Superconductivity, Spintronics and Surface Science Center

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test.jpgPrecursors
We are interested in the following research fields:
 
   
 

The chemical solution deposition (CSD), comprising methods such as sol-gel routes and metalorganic deposition (MOD), offers a number of advantages over the vapor deposition techniques. The method is inexpensive, the composition can be easily controlled and modified, providing an atomic level mixing of the elements, reducing the diffusion path up to nanometric scale for obtaining the desired material and, as a consequence, lower synthesis temperatures.

The classification of CSD precursor solutions given in Figure 1.

precursor solution

 
 
  • thermogravimetric-differential thermal analyses (TG-DTA)
  • infrared spectroscopy(FT-IR)
  • mass spectrometry coupled thermal analysis(MS-TG/DTA)
  • X-ray diffraction
 
Lanthanum Propionate
barium complex
[La2(OOCCH2CH3)6 ∙(H2O)3]n
Cambridge Crystallographic Data Centre [CCDC 731722]
Ba7(CH3CH2COO)10(CH3COO)4·5H2O
Cambridge Crystallographic Data Centre [CCDC 814595]

L. Ciontea, M. Nasui, T. Petrisor Jr., R.B. Mos, M.S. Gabor, R.A. Varga, T. Petrisor, „Synthesis, crystal structure and thermal decomposition of [La2(CH3CH2COO)6 (H2O)3]3.5H2O precursor for high-k La2O3 thin films deposition”, Materials Research Bulletin 45 (2010) 1203–1208

R.B. Mos, M. Nasui, T. Petrisor Jr., M.S. Gabor, R.A. Varga, L. Ciontea, T. Petrisor, Synthesis, crystal structure and thermal decomposition study of a new barium acetato-propionate complex, Journal of Analytical and Applied Pyrolysis 92 (2011) 445–44

Single crystal grown from solution.
 
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imagine 2
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  • molecular modeling was performed by using the SPARTAN 10 software, version 1.0.1 (Wavefunction. Inc).
propionate
Fig.1 Molecular structure of Y2(CH3CH2COO)6 · H2O obtained by molecular modeling