스트론티움을 포함하는 페롭스카이트형 페라이트의 화학적.물리적 성질에 관한 연구

이은석; 여철현

Journal of the Korean Industrial and Engineering Chemistry, Vol.4, No.2, 342-348, June, 1993

Export Citation

스트론티움을 포함하는 페롭스카이트형 페라이트의 화학적.물리적 성질에 관한 연구

Studies on the Chemical and Physical Properties of Perovskite-Type Ferrites Containing Strontium

이은석, 여철현

초록

1473 K, 대기압하에서 Sm_1-xSr_xFe³⁺_1-tFe⁴⁺_tO_3-y (0.00≤x≤1.00) 페라이트계에 대하여 균일상의 시료를 제조하였다. x값의 증가에 따라 Fe⁴⁺ 이온의 양이 증가하였으며 결정학적 구조는 orthorhombic에서 cubic으로 변화함을 알 수 있었다. Fe⁴⁺ 이온의 증가에따라 일정온도에서의 전기전도도는 급격히 증가하며, 활성화에너지는 감소한다. x=0.00 시 료의 M ssbauer spectrum은 six-line 형태를 보이며 팔면체 자리에 Fe³⁺ 이온이 존재함을 확인시켜 주었다.

At 1473 K under atmospheric pressure, the homogeneous samples of the Sm_1-xSr_xFe³⁺_1-tFe⁴⁺_tO_3-y (0.00≤x≤1.00) ferrite system were prepared. With the increase in x value, the amount of Fe(4+) ion increased and the crystallographic structure was changed from orthorhombic symmetry to cubic symmetry. The electrical conductivity at constant temperature sharply increases and the activation energy decreases with the increase of Fe(4+) ion. Mossbauer spectrum of the sample x=0.00 shows six-line pattern indicating the presence of Fe(3+) ion in the octahedral sites.

[References]

Grenier JC, Ea N, Pouchard M, Hagenmuller P, J. Solid State Chem., 58, 243 (1985)
Yo CH, Lee ES, Pyon MS, J. Solid State Chem., 73, 411 (1988)
Takano M, Okita T, Goodenough JB, J. Solid State Chem., 73, 240 (1988)
Wattiaux A, Grenier JC, Pouchard M, Hagenmuller P, J. Electrochem. Soc., 134, 1714 (1987)
Wattiaux A, Grenier JC, Pouchard M, Hagenmuller P, J. Electrochem. Soc., 134, 1718 (1987)
Yamamura H, Haneda H, Shirasaki SI, Dakada K, J. Solid State Chem., 36, 1 (1981)
Takano M, Kawachi J, Nakanishi N, Takeda Y, J. Solid State Chem., 39, 75 (1981)
Watanabe H, J. Phys. Soc. Jpn., 12, 515 (1957)
Yamamura H, Kiriyama R, Bull. Chem. Soc. Jpn., 45, 2702 (1972)
Grenier JC, Menil F, Pouchard M, Hagenmuller P, Mater. Res. Bull., 13, 329 (1978)
Shimony U, Knudsen JM, Phys. Rev., 144, 362 (1906)
Komornicki S, Grenier JC, Menil F, Hagenmuller P, Mater. Res. Bull., 16, 197 (1981)
Eibschutz M, Shtrikman S, Treves D, Phys. Rev., 156, 562 (1967)
Treves D, J. Appl. Phys., 36, 1033 (1965)
Cullity BD, "Elements of X-ray Diffraction (2nd ed.)," Addison-Wesley Publishing Co., New York, p. 38-61 (1968)
Horn FE, "Elementry Matrix Algebra (2nd ed.)," Macmillan, New York (1964)
Action FS, "Numerical Methods That Work," Harper and Row, New York (1970)
Laplume J, Londe Electrique, 35, 113 (1955)
Galiagher PK, MacChesney JB, Buchanan DNE, J. Chem. Phys., 41, 2429 (1964)
MacChesney JB, Sherwood RC, Porter JF, J. Chem. Phys., 43, 1907 (1965)

[Referenced By]

[1] Grenier JC, Ea N, Pouchard M, Hagenmuller P, J. Solid State Chem., 58, 243 (1985)

[2] Yo CH, Lee ES, Pyon MS, J. Solid State Chem., 73, 411 (1988)

[3] Takano M, Okita T, Goodenough JB, J. Solid State Chem., 73, 240 (1988)

[4] Wattiaux A, Grenier JC, Pouchard M, Hagenmuller P, J. Electrochem. Soc., 134, 1714 (1987)

[5] Wattiaux A, Grenier JC, Pouchard M, Hagenmuller P, J. Electrochem. Soc., 134, 1718 (1987)

[6] Yamamura H, Haneda H, Shirasaki SI, Dakada K, J. Solid State Chem., 36, 1 (1981)

[7] Takano M, Kawachi J, Nakanishi N, Takeda Y, J. Solid State Chem., 39, 75 (1981)

[8] Watanabe H, J. Phys. Soc. Jpn., 12, 515 (1957)

[9] Yamamura H, Kiriyama R, Bull. Chem. Soc. Jpn., 45, 2702 (1972)

[10] Grenier JC, Menil F, Pouchard M, Hagenmuller P, Mater. Res. Bull., 13, 329 (1978)

[11] Shimony U, Knudsen JM, Phys. Rev., 144, 362 (1906)

[12] Komornicki S, Grenier JC, Menil F, Hagenmuller P, Mater. Res. Bull., 16, 197 (1981)

[13] Eibschutz M, Shtrikman S, Treves D, Phys. Rev., 156, 562 (1967)

[14] Treves D, J. Appl. Phys., 36, 1033 (1965)

[15] Cullity BD, "Elements of X-ray Diffraction (2nd ed.)," Addison-Wesley Publishing Co., New York, p. 38-61 (1968)

[16] Horn FE, "Elementry Matrix Algebra (2nd ed.)," Macmillan, New York (1964)

[17] Action FS, "Numerical Methods That Work," Harper and Row, New York (1970)

[18] Laplume J, Londe Electrique, 35, 113 (1955)

[19] Galiagher PK, MacChesney JB, Buchanan DNE, J. Chem. Phys., 41, 2429 (1964)

[20] MacChesney JB, Sherwood RC, Porter JF, J. Chem. Phys., 43, 1907 (1965)