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KAJIAN PEROVSKITE LA0,73CA0,27MN1-XCUXO3 DENGAN 0 Gunanto, Y. E.; Sinaga, K.; Purwanto, A.; Kurniawan, B.; Poertadji, S.; Steven, E.; Brooks, J. S.
Jurnal Spektra Vol 15, No 1 (2014): Spektra: Jurnal Fisika dan Aplikasinya
Publisher : Jurnal Spektra

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Abstract

We have performed the synthesis and characterization of materials La0.73Ca0.27Mn1-xCuxO3 for 0 <x< 0.19 using  neutron scattering diffraction (HRPD) and SQUID.All the samples are already in phase with the crystal structure  orthorombic and space group P nma. Parameters of the Mn-O bond length obtained from the charactyerization HRPD. From  the parameters of Mn-O bond length can be determined the value of Jahn-Teller distortion. The greater x will result in an  average radius of position B (<rB>) increasing and the tolerance factor t decreasing. From the characterization of the SQUID  was found that the maximum value of conductivity for Cu-doped samples will be lower when compare to the sample without  doping, except for Cu=0.10. If the value of the conductivity is getting smaller, the activation energy will be higher. Keywords: Jahn-Teller distortion, factor tolerance, conductivity, activation energy
KAJIAN PEROVSKITE LA0,73CA0,27MN1-XCUXO3 DENGAN 0 Gunanto, Y. E.; Sinaga, K.; Purwanto, A.; Kurniawan, B.; Poertadji, S.; Steven, E.
Spektra: Jurnal Fisika dan Aplikasinya Vol 15 No 1 (2014): SPEKTRA, Volume 15 Nomor 1, Mei 2014
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

AbstractWe have performed the synthesis and characterization of materials La0.73Ca0.27Mn1-xCuxO3 for 0 <x< 0.19 using neutron scattering diffraction (HRPD) and SQUID.All the samples are already in phase with the crystal structure orthorombic and space group P nma. Parameters of the Mn-O bond length obtained from the charactyerization HRPD. From the parameters of Mn-O bond length can be determined the value of Jahn-Teller distortion. The greater x will result in an average radius of position B (<rB>) increasing and the tolerance factor t decreasing. From the characterization of the SQUID was found that the maximum value of conductivity for Cu-doped samples will be lower when compare to the sample without doping, except for Cu=0.10. If the value of the conductivity is getting smaller, the activation energy will be higher.