수열법에 의한 PbTiO3 분말의 합성

박선민; 이철태; 김판채

Journal of the Korean Industrial and Engineering Chemistry, Vol.6, No.6, 1101-1107, December, 1995

Export Citation

수열법에 의한 PbTiO3 분말의 합성

Synthesis of PbTiO₃ Particles by Hydrothermal Method

박선민, 이철태, 김판채

초록

PbTiO₃ 미립자를 수열합성하였다. 본 연구에서 출발물질은 PbO와 TIO₂의 화학양론적으로 혼합하였다. 단상으로 PbTiO₃를 합성하는데 KOH와 NaOH 용액이 가장 효과적이었다. 수열조건은 다음과 같다. :즉, 온도 ; 250∼270℃, 유지시간 ; 10시간, 수열용매 ; 8M KOH 용액에서 판상의, NaOH 용액에서 주상의 결정상으로 잘 발달하였다. 수열적으로 얻은 PbTiO₃입자 특성을 조사하여 다음 결과들을 얻었다. : Pb/Ti 몰비 ; 약 1, 비표면적 ; KOH 경우 2.27∼2.43㎡/g, NaOH에서 4.74∼5.59㎡/g, 격자상수 ; a=0.390, c=0.414nm(c/a=1.06), 큐리점 ;약 470℃.

Synthesis of PbTiO₃, particles was carried out by the hydrothermal method. In thin study, the starting powder was derived from a stoichiometric mixture of PbO and TiO₂ powders. KOH and NaOH solution was found to be the most effective solvent to synthesize PbTiO₃ particles as a single phase. The hydrothermal conditions for the synthesis of PbTiO₃ particles are as follows : temperature ; 250∼270℃, run duration ; 10hrs, hydrothermal solvent ; 8M KOH or NaOH solutions. These particles were of well developed crystalline PbTiO₃ with plate-like shape in KOH solution and article shape in NaOH solution, respectively. Characteristics of the hydrothermally obtained PbTiO₃ particles were investigated. And the following results were obtained : Pb/Ti mole ratio ; about 1, specific surface area ; 2.27∼2.43㎡/g in KOH solution and 4.74∼5.59㎡/g in NaOH solution, lattice constants ; a=0.390 and 0.414nm(c/a=1.06), curie temperature about 470℃.

[References]

Shirane G, Hoshino S, J. Phys. Soc. Jpn., 6, 265 (1951)
Subbarao EC, J. Am. Ceram. Soc., 43, 119 (1960)
Ueda I, Ikegami S, J. Appl. Phys., 7, 236 (1968)
Ikegami S, Ueda I, Nagata T, J. Acoust. Soc. Am., 50, 1060 (1971)
Banno H, Saito S, J. Appl. Phys., 22, 67 (1983)
Keizer K, Burggraaf AJ, Phys. Stat. Sol., 26, 561 (1974)
Blum JB, Gurkovich SR, J. Mater. Sci., 20, 4479 (1985)
Gurkovich SR, Blum JB, Ferroelectrics, 62, 189 (1985)
Hayashi Y, Blum JB, J. Mater. Sci., 22, 2655 (1987)
Chen C, Ryder DF, Spurgeon WA, J. Am. Ceram. Soc., 72, 1495 (1989)
Safari A, Lee YH, Halliyal A, Am. Ceram. Soc. Bull., 66, 668 (1987)
Fox GR, Adair JH, Newnham RE, J. Mater. Sci., 25, 3634 (1990)
Kaneko S, Imoto F, Bull. Chem. Soc. Jpn., 51, 1739 (1978)
Ohara Y, Koumoto K, Yanagida H, J. Am. Ceram. Soc., 68, 108 (1985)
Cheng H, Ma J, Zhao Z, Qiang D, Li Y, Yao X, J. Am. Ceram. Soc., 75, 1123 (1992)
김판채, 한국결정성장학회지, 4, 139 (1994)
김창은, 이홍림, 이형직, 이형복, 세라믹분체재료학, 141 (1994)

[Referenced By]

[1] Shirane G, Hoshino S, J. Phys. Soc. Jpn., 6, 265 (1951)

[2] Subbarao EC, J. Am. Ceram. Soc., 43, 119 (1960)

[3] Ueda I, Ikegami S, J. Appl. Phys., 7, 236 (1968)

[4] Ikegami S, Ueda I, Nagata T, J. Acoust. Soc. Am., 50, 1060 (1971)

[5] Banno H, Saito S, J. Appl. Phys., 22, 67 (1983)

[6] Keizer K, Burggraaf AJ, Phys. Stat. Sol., 26, 561 (1974)

[7] Blum JB, Gurkovich SR, J. Mater. Sci., 20, 4479 (1985)

[8] Gurkovich SR, Blum JB, Ferroelectrics, 62, 189 (1985)

[9] Hayashi Y, Blum JB, J. Mater. Sci., 22, 2655 (1987)

[10] Chen C, Ryder DF, Spurgeon WA, J. Am. Ceram. Soc., 72, 1495 (1989)

[11] Safari A, Lee YH, Halliyal A, Am. Ceram. Soc. Bull., 66, 668 (1987)

[12] Fox GR, Adair JH, Newnham RE, J. Mater. Sci., 25, 3634 (1990)

[13] Kaneko S, Imoto F, Bull. Chem. Soc. Jpn., 51, 1739 (1978)

[14] Ohara Y, Koumoto K, Yanagida H, J. Am. Ceram. Soc., 68, 108 (1985)

[15] Cheng H, Ma J, Zhao Z, Qiang D, Li Y, Yao X, J. Am. Ceram. Soc., 75, 1123 (1992)

[16] 김판채, 한국결정성장학회지, 4, 139 (1994)

[17] 김창은, 이홍림, 이형직, 이형복, 세라믹분체재료학, 141 (1994)