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Pressure effects on oxygen-deficient Ba-substituted cobaltites

Published online by Cambridge University Press:  14 November 2013

V. Sikolenko ,
V.V. Efimov ,
D. Többens ,
S. Schorr ,
C. Ritter ,
M.V. Bushinsky  and
I.O. Troyanchuk
V. Sikolenko
Affiliation:
Karlsruhe Institute of Technology, Karlsruhe, Germany Joint Institute for Nuclear Research, Dubna, Russia Helmholtz Center Berlin, Germany
V.V. Efimov
Affiliation:
Joint Institute for Nuclear Research, Dubna, Russia
D. Többens
Affiliation:
Helmholtz Center Berlin, Germany
S. Schorr
Affiliation:
Helmholtz Center Berlin, Germany
C. Ritter
Affiliation:
Institute Laue Langevin, Grenoble, France
M.V. Bushinsky
Affiliation:
Scientific-Practical Material Research Center of NAS of Belarus, Minsk, Belarus
I.O. Troyanchuk
Affiliation:
Scientific-Practical Material Research Center of NAS of Belarus, Minsk, Belarus
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Abstract

Neutron diffraction studies of the La0.5Ba0.5CoO2.8 at the different temperatures has been performed. This solid solution crystallizes in the cubic structure (Pm3m space group) and exhibits below TN ~ 250K G-type antifferomagnetic ordering. Applied pressure suppresses magnetic ordering. Anomalous changes of the lattice parameters under pressure have been found.

Keywords

high pressurecobaltitesRietveld analysesneutron diffraction
Type
Technical Articles
Information
Powder Diffraction , Volume 28 , Supplement S2 , September 2013 , pp. S126 - S132
Copyright
Copyright © International Centre for Diffraction Data 2013 

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References

Fauth, F., Suard, E. and Caignaert, V. (2001). “Intermediate spin state of Co3+ and Co4+ ions in La0.5Ba0.5CoO3 evidenced by Jahn-Teller distortions,” Phys. Rev. B: Condens. Matter Mater. Phys. 65, 060401.CrossRefGoogle Scholar
Goodenough, J. B. and Senaris-Rodriguez, M. (1995). “Magnetic and transport properties of the system La1–xSrxCoO3–δ (0<x≤0.50),” J. Solid State Chem. 118, 323–336.Google Scholar
Rodriguez-Carvajal, J. (1993). “Recent advances in magnetic structure determination by neutron powder diffraction,” Physica B 192, 55–69.Google Scholar
Sikolenko, V. V., Sazonov, A. P., Troyanchuk, I. O., Többens, D., Zimmermann, U., Pomjakushina, E. V. and Szymczak, H. (2004). “Magnetic properties of La1– x Sr x CoO3 (x=0.15 and 0.3),” J. Phys.: Condens. Matter 16, 7313.Google Scholar
Sikolenko, V., Efimov, V., Efimova, E., Sazonov, A., Ritter, C., Kuzmin, A. and Troyanchuk, I. (2009). “Neutron diffraction studies of structural and magnetic properties of niobium doped cobaltites,” J. Phys.: Condens. Matter 21, 436002Google Scholar
Soda, M., Yasui, Y., Ito, M., Iikubo, S., Sato, M. and Kakurai, K. (2004). “Magnetic structures and spin states of NdBaCo2O5.5,” J. Phys. Soc. Jpn. 464, 73.Google Scholar
Sundaran, N. Jiang, Y., Anderson, I., Bridges, F. and Zheng, H. (2009). “Local Structure of La1- x Sr x CoO3 Determined from EXAFS and Neutron Pair Distribution Function Studies,” Phys. Rev. Lett. 102, 026401.Google Scholar
Troyanchuk, I., Karpinsky, D., Bushinsky, M., Sikolenko, V., Efimov, V. and Cervellino, A. (2011). “The low-temperature macroscopic phase separation in La0.5Ba0.5CoO3–δ cobaltite,” JETP Lett. 93, 139–143.CrossRefGoogle Scholar
Troyanchuk, I., Sikolenko, V., Efimov, V., Raveau, B., Karpinsky, D., Bushinsky, M. and Cervellino, A. (2012) “The ferromagnetic and antiferromagnetic phases in anion deficient La0.5–xPrxBa0.5CoO3–δ cobaltites,” J. Appl. Phys. 112, 013916.Google Scholar
Troyanchuk, I., Karpinsky, D. and Yokachiya, F. (2008). “Effect of iron doping on the magnetic structure of TbBaCo2O5.5 layered perovskite,” J. Phys.: Cond.Mat. 20, 335228.Google Scholar
Wu, J. and Leighton, C. (2003). “Glassy ferromagnetism and magnetic phase separation in La1 -x Sr x CoO3, ” Phys. Rev. B: Condens. Matter Mater. Phys. 67, 174408.CrossRefGoogle Scholar