[1]Terasaki I, Sasago Y, Uchinokura K. Large thermoelectric power in NaCo2O4 single crystals. Phys. Rev. B, 1997, 56(20): R12685-R12687.[2]Zhang Y F, Zhang J X, Lu Q M. Rapid synthesis of Ca2Co2O5 textured ceramics by coprecipitation method and spark plasma sintering. J. Alloys Compd., 2005, 399(1/2): 64-68.[3]Masset A C, Michel C, Maignan A, et al. Misfit-layered cobaltite with an anisotropic giant magnetoresistance: Ca3Co4O9. Phys. Rev. B, 2000, 62(1): 166-175.[4]Funahashi R, Shikano M. Bi2Sr2Co2Oy whiskers with high thermoelectric figure of merit. Appl. Phys. Lett., 2002, 81(8): 1459-1461.[5]Fujita K, Mochida T, Nakamura K. High-temperature thermoelectric properties of NaxCoO2-delta single crystals. Jpn. J. Appl. Phys., 2001, 40: 4644-4647.[6]Shizuya M, Isobe M, Baba Y, et al. Monoclinic phase of the mist-layered cobalt oxide (Ca0.85OH)1.16CoO2. J. Solid State Chem., 2006, 179(12): 3974-3980.[7]Isobe M, Shizuya M, Takayama-Muromachi E. Structure and properties of (CaOH)kCoO2. Physica C, 2007, 463-465: 178-181.[8]Ito M, Furumoto D. Effects of noble metal addition on microstructure and thermoelectric properties of NaxCo2O4. J. Alloys Compd., 2008, 450(1/2): 494-498.[9]Pei J, Chen G, Lu D Q, et al. Synthesis and high temperature thermoelectric properties of Ca3.0-x-yNdxNayCo4O9+δ. Solid State Commu., 2008, 146(7/8): 283-286.[10]Liu P S, Chen G, Pei J, et al. Preparation and characterization of the new oxides Ca2-xNaxCo2O5. Physica B, 2008, 403(10/11): 1808-1812.[11]Wang D L, Chen L D, Yao Q, et al. High-temperature thermoelectric properties of Ca3Co4O9+δ with Eu substitution. Solid State Commu., 2004, 129(9): 615-618.[12]Mikami M, Chong K J, Miyazaki Y, et al. Bi-substitution effects on crystal structure and thermoelectric properties of Ca3Co4O9 single crystals. Jpn. J. Appl. Phys., 2006, 45(1): 4131-4137.[13]Wang Y, Sui Y, Cheng J G, et al. High temperature transport and thermoelectric properties of Ag-substituted Ca3Co4O9+δ system. J. Alloys Compd., 2008, 448(1/2): 1-5.[14]Zhang Y F, Zhang J X, Lu Q M, et al. Synthesis and characterization of Ca3Co4O9 nanoparticles by citrate Sol-Gel method. Mater. Lett., 2006, 60(20): 2443-2446. |