TITLE

La0.7Pr0.3MnO3 ceramic: An electron-doped colossal magnetoresistive manganite

AUTHOR(S)
Duan, Ping; Zhenghao Chen; Shouyu Dai; Zhou, Yueliang; Huiblin Lu; Kuijian Jin; Bolin Cheng
PUB. DATE
June 2004
SOURCE
Applied Physics Letters;6/7/2004, Vol. 84 Issue 23, p4741
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report a study on the synthesis, electrical transport, and magnetic properties of Pr-doped LaMnO3 ceramic material. We have found that La1-xPrxMnO3+δ (x=0.3) synthesized using solid-state reaction shows semiconductor behavior, and no colossal magnetoresistance (CMR) effect; while it shows CMR behavior when it is annealed in a flowing argon at certain temperature (about 873 K), which suggests that La0.7Pr0.3MnO3+δ has been transferred to La0.7Pr0.3MnO3. The x-ray photoemission spectroscopy reveals that Pr ions are in a mixed-valence state of Pr4+ and Pr3+ in this compound. Therefore, La1-xPrxMnO3 (x=0.3) could be an electron-doped CMR manganite. © 2004 American Institute of Physics.
ACCESSION #
13203705

 

Related Articles

  • Modulation frequency dependence of the photoelectrical response of GaAs/InGaP superlattices. Parisini, Antonella; Ghezzi, Carlo; Tarricone, Luciano; Baldini, Michele; Vantaggio, Salvatore; Gombia, Enos // Journal of Applied Physics;Dec2009, Vol. 106 Issue 11, p113709 

    Photoelectrical measurements were taken on a nominally undoped-InGaP/GaAs superlattice, inserted between two p+ and n+ InGaP cladding layers. The sequence of InGaP/GaAs alternated layers forming the superlattice was grown lattice matched on n+-GaAs substrates through low pressure-metal organic...

  • Gamma-ray superconducting detector based on Abrikosov vortices: Principle of operation. Lisitskiy, M. P. // Journal of Applied Physics;Nov2009, Vol. 106 Issue 10, p103927 

    The high atomic number of some superconducting elements such as niobium (Z=41) and tantalum (Z=73) and a high material thickness (e.g., t=300 μm) are emphasized as essential properties for development of a gamma-ray solid state detector with high intrinsic detection efficiency in the energy...

  • A first principles study on optical transparency mechanism in Dy doped α-SiAlON ceramics. Zhong, H. M.; Liu, Q.; Jiang, J.; Sun, G. Y.; Luo, Y. // Journal of Applied Physics;Nov2009, Vol. 106 Issue 9, p093514 

    Dy doped α-SiAlON ceramics prepared by the hot-pressing method show a high optical transmittance value, >70%, in the infrared region of 1.5–4.5 μm. First principles calculations have been carried out to reveal the underlying transparency mechanism. It is found that the valence shell...

  • Sharp low frequency dissipative effects in tetragonal BaTiO3 ceramics. Dong, Liang; Stone, Donald S.; Lakes, Roderic S. // Journal of Applied Physics;Jan2010, Vol. 107 Issue 2, p023514 

    Mechanical anomalies (damping peaks sharper than Debye peaks, in contrast to a broad relaxation peak) were observed in tetragonal barium titanate ceramic via broadband viscoelastic spectroscopy at low frequencies (<10 Hz) at ambient temperature after aging at 90 °C for 15 h. The sharp peaks...

  • From first-order magneto-elastic to magneto-structural transition in (Mn,Fe)1.95P0.50Si0.50 compounds. Dung, N. H.; Zhang, L.; Ou, Z. Q.; Brück, E. // Applied Physics Letters;8/29/2011, Vol. 99 Issue 9, p092511 

    We report on structural, magnetic, and magnetocaloric properties of MnxFe1.95-xP0.50Si0.50 (x ≥ 1.10) compounds. With increasing the Mn:Fe ratio, a first-order magneto-elastic transition gradually changes into a first-order magneto-structural transition via a second-order magnetic...

  • Modification of the spectrum of electronic states in polycrystalline p-CdTe as a result of annealing in Cd vapors or natural aging. Kolosov, S. A.; Klevkov, Yu. V.; Klokov, A. Yu.; Krivobok, V. S.; Sharkov, A. I. // Semiconductors;Nov2009, Vol. 43 Issue 11, p1484 

    Electrical properties, steady-state photoconductivity, and kinetics of photoconductivity have been studied in the samples of polycrystalline p-CdTe (as-grown by the method of low-temperature synthesis from thoroughly purified components; subjected to subsequent annealing in Cd vapors; and aged...

  • Magnetism of (Zn,Co)O thin films probed by x-ray absorption spectroscopies. Rode, K.; Mattana, R.; Anane, A.; Cros, V.; Jacquet, E.; Contour, J.-P.; Petroff, F.; Fert, A.; Arrio, M.-A.; Sainctavit, Ph.; Bencok, P.; Wilhelm, F.; Brookes, N. B.; Rogalev, A. // Applied Physics Letters;1/7/2008, Vol. 92 Issue 1, p012509 

    We report on the electronic and magnetic properties of Co-doped ZnO thin films investigated by x-ray absorption spectroscopies and element selective magnetometry. For a low Co concentration (around 5%), we evidence a paramagnetic phase clearly correlated to Co2+ ions substituted to Zn in the ZnO...

  • Investigation of site preference of Zn doped Ba3Co2-xZnxFe24O41 by Mössbauer spectroscopy. Jung Tae Lim; Chul Sung Kim // Journal of Applied Physics;2014, Vol. 115 Issue 17, p17D706-1 

    The polycrystalline Ba3Co2-xZnxFe24O41 (x=0.0, 0.5, 1.0) samples were prepared by using solid-state-reaction method. The crystal structures and magnetic properties of samples were investigated with x-ray diffractometer, vibrating sample magnetometer, and Mössbauer spectroscopy. The crystal...

  • Room temperature dielectric and magnetic properties of Gd and Ti co-doped BiFeO3 ceramics. Basith, M. A.; Kurni, O.; Alam, M. S.; Sinha, B. L.; Ahmmad, Bashir // Journal of Applied Physics;2014, Vol. 115 Issue 2, p1 

    Room temperature dielectric and magnetic properties of BiFeO3 samples, co-doped with magnetic Gd and non-magnetic Ti in place of Bi and Fe, respectively, were reported. The nominal compositions of Bi0.9Gd0.1Fe1-xTixO3 (x = 0.00-0.25) ceramics were synthesized by conventional solid state reaction...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics