LaNi1-xTixO3(x ≤ 0.5) 세라믹스의 전기전도 특성

정우환; Woo-Hwan Jung

Korean Journal of Materials Research, Vol.19, No.4, 186-191, April, 2009

DOI10.3740/MRSK.2009.19.4.186 Export Citation

LaNi1-xTixO3(x ≤ 0.5) 세라믹스의 전기전도 특성

Electrical Transport Properties of LaNi1-xTixO3 (x ≤ 0.5) Ceramics

정우환^†

호원대학교 전자공학과

Woo-Hwan Jung^†

Department of Electronics, Howon University, 727, Impi, Wolha-ri, Kunsan, Jeonbuk 573-930, Korea

E-mail:

Thermoelectric power and resistivity are measured for the perovskite LaNi1-xTixO3 (x ≤ 0.5) in the temperature range 77 K . 300 K. The measured thermoelectric power of LaNi1-xTixO3 (x ≤ 0.5) increases linearly with temperature and is represented by A + BT. The x = 0.1 sample showed metallic behavior, the x = 0.3 showed metal and insulating transition around 150 K, and x = 0.5 showed insulating behavior the over the whole temperature range. The electrical resistivity of x = 0.1 shows linear temperature dependence over the whole temperature range and T2 dependence. On the other hand, the electrical resistivity of x = 0.3 shows a linear relation between lnρ and T.1/4 (variable range hopping mechanism) in the range of 77 K to 150 K. For x = 0.5, the temperature dependence of resistivity is characteristic of insulating materials; the resistivity data was fitted to an exponential law, such as ln(ρ/T) and T.1, which is usually attributed to a small polaron hopping mechanism. These experimental results are interpreted in terms of the spin polaron (x = 0.1) and variable range hopping (x = 0.3) or small polaron hopping (x = 0.5) of an almost localized Ni3+ 3d polaron.

Keywords:metallic conductivity;metal-insulator transition;polaron;variable range hopping;thermoelectric power

[References]

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[Referenced By]

[1] Snyder GJ, Booth CH, Bridges F, Hiskes R, DiCarolis S, Beasley MR, Geballe TH, Phys. Rev. B., 55, 6453 (1998)

[2] Park JW, Kim MS, Park JG, Swainson IP, Ri HC, Lee HJ, Kim KH, Noh TW, Cheong SW, Lee CH, J. Kor. Phys. Soc, 36, 412 (2000)

[3] Park JG, Kim MS, Ri HC, Kim KH, Noh TW, Cheong SW, Phys. Rev. B., 60, 14804 (1999)

[4] Jung WH, Sohn JH, Lee JH, Sohn JH, Park MS, Cho SH, J. Am. Ceram. Soc., 83(4), 797 (2000)

[5] Li YD, Zhang JH, Xiong CS, Liao HW, J. Am. Ceram. Soc., 83(4), 980 (2000)

[6] Mills AI, Phys. Rev. B., 53, 8434 (1996)

[7] Mills AI, Phys. Rev. B., 55, 6405 (1997)

[8] Rajeev KP, Shivashankar GV, Raychaudhuri AK, Solid State Comm., 79, 591 (1991)

[9] Satyalakshmi KM, Mally RM, Ramanathan KV, Wu XD, Brainard K, Gautier DC, Vasanthachary NY, Hegde MS, Appl. Phys. Lett., 62, 1223 (1993)

[10] Torrance JB, Lacorre P, Nazzal AI, Ansaldo EJ, Nidermayer CH, Phys. Rev. B., 45, 8209 (1992)

[11] Zaanen J, Sawatzky GA, Allen JW, Phys. Rev. Lett., 55, 418 (1985)

[12] Medarde M, Fontaine A, Garcia JL, Rodriguez J, De Santis M, Sacchi M, Rossi G, Lacorre P, Phys. Rev. B., 46, 14975 (1992)

[13] Barman SR, Chainani A, Sarma D, Phys. Rev. B., 49, 8475 (1994)

[14] Vassiliou JK, Hornsbostel M, Ziebarth R, Disalvo FJ, J. Solid. State Chem., 81, 208 (1989)

[15] Blasco J, Castro M, Garcia J, J. Phys.: Condens. Matter., 6, 5875 (1994)

[16] Canfield PC, Thompson JD, Cheong SW, Rupp LW, Phys. Rev. B., 47, 12357 (1993)

[17] Gayathri N, Raychaudhuri AK, Xu XQ, Peng JL, Greene RL, J. Phys.: Condens. Matter., 10, 1323 (1998)

[18] Rajeev KP, Shivashankar GV, Raychaudhur AK, Solid. State Comm., 79, 1112 (1991)

[19] Jung WH, Nakatsugawa H, Iguchi R, J. Solid State. Chem., 166, 466 (1997)

[20] Iguch E, Jung WH, J. Phys. Soc. Jap., 63, 3078 (1994)

[21] Kulkarrni V, Priolkar KR, Sarode PR, Rawat R, Banerjee A, Emura S, J. Phys.: Condens. Matter., 20, 75203 (2008)

[22] Sreedhar K, Honig JM, Darwin M, McElfresh M, Shand PM, Xu J, Crooker BC, Spalek JK, Phys. Rev. B., 46, 6328 (1992)

[23] Palsta TTM, Ramirez AP, Cheong SW, Zegarski BR, Schiffer P, Zaanen J, Phys. Rev. B., 56, 5140 (1997)

[24] Crespi VH, Lu L, Jia YX, Khazeni K, Zettle A, Cohen ML, Phys. Rev. B., 53, 14303 (1996)

[25] Mott NF, Adv. Phys., 39, 55 (1990)

[26] Mott NF, J. Phys.: Condens. Matter., 5, 3487 (1993)

[27] Zheng GH, Ma YQ, Zhu XB, Sun YP, Solid State Comm., 142, 217 (2007)

[28] Zhao BC, Sun YP, Lu WJ, Yang J, Zhu XB, Song WH, Solid State Comm., 139, 209 (2006)

[29] Furukawa Y, Wada S, J. Phys. Soc. Jap., 61, 1182 (1992)

[30] Jung WH, J. Phys.: Condens. Matter., 10, 8553 (1998)

[31] Weber WJ, Griffin CW, Bates JL, J. Am. Ceram. Soc., 70, 265 (1987)

[32] Brahma P, Banerjee S, Chakraborty S, Chakravorty D, J. Appl Phys., 88, 6526 (2000)

[33] Wang S, Li K, Chen Z, Zhang Y, Phys. Rev. B., 61, 575 (2000)