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Supercritical hydrothermal synthesis of polycrystalline gadolinium aluminum perovskite materials (GdAlO3, GAP)

1 Department of Studies in Earth Science, University of Mysore, Mysore 570 006, India
2 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
3 Department of Environmental Science, University of Mysore, Mysore 570 006, India

The orthorhombic perovskite, Gadolinium aluminum oxide (GdAlO3, GAP) material was successfully prepared by hydrothermal supercritical fluid method using co-precipitated gel of GAP. All experiments were carried out in the pressure and temperature ranges of 100–150 MPa and 180–650 °C respectively. The as-prepared GAP samples were systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray spectroscopy (EDS), thermo gravimetry (TGA) and differential thermo gravimetry analysis (DTA). The XRD profile confirms fully crystalline and orthorhombic nature of as-prepared materials, which is well correlated to the reported results. The SEM studies reveal that the GAP materials synthesized at 650 °C/150 MPa for 92 hrs possesses polycrystalline nature with average particle size in the range of 5–20 µm. The DTA shows a crystallization peak at 361 °C at this temperature the agglomerated GAP gel starts to crystallize into polycrystalline GAP materials. When compared with other methods, like sol-gel and solid-state reactions our crystallization temperature is very much lower and feasible. This work not only demonstrates a simple way to fabricate GAP polycrystalline materials from co-precipitated gels but also shows a possible utilization of same technique for synthesis of other high temperature materials.
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Keywords co-precipitated gel; hydrothermal process; perovskite; supercritical temperature

Citation: HN Girish, P Madhusudan, CP Sajan, BV Suresh Kumar, K Byrappa. Supercritical hydrothermal synthesis of polycrystalline gadolinium aluminum perovskite materials (GdAlO3, GAP). AIMS Materials Science, 2017, 4(3): 540-550. doi: 10.3934/matersci.2017.3.540


  • 1. Attfield JP (2001) Structure–property relations in doped perovskite oxides. Int J Inorg Mater 3: 1147–1152.    
  • 2. Atwood DA, Yearwood BC (2000) The future of aluminium chemistry. J Organomet Chem 600: 186–197.    
  • 3. Cashion JD, Cooke AH, Hawkes JFB, et al. (1968) Magnetic Properties of Antiferromagnetic GdAIO3. J Appl Phys 39: 1360–1361.    
  • 4. Cashion JD, Cooke AH, Leask MJM, et al. (1968) Crystal Growth and Magnetic Susceptibility of Some Rare-Earth Compounds. Part 2. Magnetic Susceptibility Measurements on a Number of Rare-Earth Compound. J Mater Sci 3: 402–407.
  • 5. Vonka P (2009) A method for the estimation of the enthalpy of formation of mixed oxides in Al2O3-Ln2O3 systems. J Solid State Chem 182: 744–748.    
  • 6. Hayashi H, Inaba H, Matsuyama M, et al. (1999) Structural consideration on the ionic conductivity of perovskite-type oxides. Solid State Ionics 122: 1–15.    
  • 7. Han SD, Khatkar SP, Taxak VB, et al. (2006) Combustion synthesis and luminescent properties of Eu3+-doped LnAlO3 (Ln = Y and Gd) phosphors. Mater Sci Eng B 127: 272–275.    
  • 8. Park JY, Jung HC, Raju GSR, et al. (2010) Enhanced green emission from Tb3+–Bi3+ co-doped GdAlO3 nanophosphors. Mater Res Bull 45: 572–575.    
  • 9. Oliveira HHS, Cebim MA, Da Silva AA, et al. (2009) Structural and optical properties of GdAlO3:RE3+ (RE = Eu or Tb) prepared by the Pechini method for application as X-ray phosphors. J Alloy Compd 488: 619–623.    
  • 10. Jisha PK, Naik R, Prashantha SC, et al. (2015) Facile combustion synthesized orthorhombic GdAlO3:Eu3+ nanophosphors: Structural and photoluminescence properties for WLEDs. J Lumin 163: 47–54.    
  • 11. Selvalakshmi T, Venkatesan P, Wu SP, et al. (2017) Gd2O3:RE3+ and GdAlO3:RE3+ (RE = Eu, Dy) Phosphor: Synthesis, Characterization and Bioimaging Application. J Nanosci Nanotechno 17: 1178–1184.    
  • 12. Verweij JWM, Cohen-Adad MT, Bouttet D, et al. (1995) Luminescence properties of GdAIO3:Ce powders. Dependence on reduction conditions. Chem Phys Lett 239: 51–55.
  • 13. Qiu LM, Numazawa T, Thummes G (2001) Performance improvement of a pulse tube cooler below 4 K by use of GdAlO3 regenerator material. Cryogenics 41: 693–696.    
  • 14. Lojpur V, Ćulubrk S, Medić M, et al. (2016) Luminescence thermometry with Eu3+ doped GdAlO3. J Lumin 170: 467–471.    
  • 15. Sinha A, Sharma BP, Gopalan P (2006) Development of novel perovskite based oxide ion conductor. Electrochim Acta 51: 1184–1193.    
  • 16. Sinha A, Näfe H, Sharma BP, et al. (2008) Study on Ionic and Electronic Transport Properties of Calcium-Doped GdAlO3. J Electrochem Soc 155: B309–B314.    
  • 17. Luo H, Bos AJJ, Dorenbos P (2016) Controlled Electron–Hole Trapping and Detrapping Process in GdAlO3 by Valence Band Engineering. J Phys Chem C 120: 5916–5925.
  • 18. Cao G (2004) Nanostructures and Nanomaterials: Synthesis, Properties and Applications, London: Imperial College Press.
  • 19. Upadhyay K, Tamrakar RK, Dubey V (2015) High temperature solid state synthesis and photoluminescence behavior of Eu3+ doped GdAlO3 nanophosphor. Superlattice Microst 78: 116–124.    
  • 20. Raju GSR, Park JY, Jung HC, et al. (2009) Synthesis and luminescent properties of low concentration Dy3+:GAP nanophosphors. Opt Mater 31: 1210–1214.    
  • 21. Gao H, Wang Y (2007) Preparation of (Gd, Y)AlO3:Eu3+ by citric-gel method and their photoluminescence under VUV excitation. J Lumin 122–123: 997–999.
  • 22. Cizauskaite S, Reichlova V, Nertavicience G, et al. (2007) Sol-gel preparation and characterization of perovskite gadolinium aluminates. Mater Sci-Poland 25: 755–765.
  • 23. Sinha A, Sharma BP, Näfe H, et al. (2010) Synthesis of gadolinium aluminate powder through citrate gel route. J Alloy Compd 502: 396–400.    
  • 24. Sinha A, Nair SR, Sinha PK (2011) Single step synthesis of GdAlO3 powder. J Alloy Compd 509: 4774–4780.    
  • 25. Catunda T, Andreeta JP, Castro JC (1986) Differential interferometric technique for the measurement of the nonlinear index of refraction of ruby and GdAlO3:Cr+3. Appl Optics 25: 2391–2395.    
  • 26. Harada Y, Uekawa N, Kojima T, et al. (2009) Fabrication of dense material having homogeneous GdAlO3-Al2O3 eutectic-like microstructure with off-eutectic composition by consolidation of the amorphous. J Eur Ceram Soc 29: 2419–2422.    
  • 27. Selvam MP, Rao KJ (2000) Microwave synthesis and consolidation of gadolinium aluminum perovskite, a ceramic extraordinaire. Adv Mater 12: 1621–1624.    
  • 28. Basavalingu B, Girish HN, Byrappa K, et al. (2008) Hydrothermal synthesis and characterization of orthorhombic yttrium aluminum perovskites (YAP). Mater Chem Phys 112: 723–725.    
  • 29. Girish HN, Vijayakumar MS, Devaraju MK, et al. (2009) Hydrothermal Synthesis and Characterization of Neodymium doped Yttrium Aluminum Perovskite (Nd:YAP). Indian Mineral 43: 162–168.
  • 30. Basavalingu B, Kumar MSV, Girish HN, et al. (2013) Hydrothermal synthesis and characterization of rare earth doped yttrium aluminium perovskite-R:YAlO3 (R = Nd, Eu & Er). J Alloy Compd 552: 382–386.    
  • 31. Rukes B, Dooley RB (2001) Guideline on the Use of Fundamental Physical Constants and Basic Constants of Water. International Association for the Properties of Water and Steam, Gaithersburg, Maryland, USA, 1–7.
  • 32. Girish HN, Basavalingu B, Shao GQ, et al. (2015) Hydrothermal synthesis and characterization of polycrystalline gadolinium aluminum perovskite (GdAlO3, GAP). Mater Sci-Poland 33: 301–305
  • 33. Hamilton DL, Henderson CMB (1968) The preparation of silicate compositions by a gelling method. Mineral Mag 36: 832–838.    
  • 34. Wang P (1994) Shanghai Inst. of Ceramics, Chinese Academy of Science, Shanghai, China.
  • 35. Cizauskaitė S, Špakauskaitė G, Beganskienė A, et al. (2006) A comparative study of GdAlO3 perovskite prepared by the sol-gel method using different complexing agents. Chemija 17: 40–45.
  • 36. Chandradass J, Kim KH (2010) Reverse Micelle-Directed Synthesis of GdAlO3 Nanopowders. Mater Manuf Process 25: 1428–1431.    
  • 37. Schrader B (1995) Infrared and Raman Spectroscopy, Method and Application.
  • 38. Nakamoto K (1986) Infrared and Raman Spectroscopy of Inorganic and Coordination Compounds.
  • 39. Vaqueiro P, López-quintela MA (1998) Synthesis of yttrium aluminium garnet by the citrate gel process. J Mater Chem 8: 161–163.    
  • 40. Chroma M, Pinkas J, Pakutinskiene I, et al. (2005) Processing and characterization of sol-gel fabricated mixed metal aluminates. Ceram Int 31: 1123–1130.    


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