TITLE

Room temperature ferromagnetism of bulk polycrystalline (In0.85-xSnxFe0.15)2O3: Charge carrier mediated or oxygen vacancy mediated?

AUTHOR(S)
Li, S. C.; Ren, P.; Zhao, B. C.; Xia, B.; Wang, L.
PUB. DATE
September 2009
SOURCE
Applied Physics Letters;9/7/2009, Vol. 95 Issue 10, p102101
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Four bulk polycrystalline (In0.85-xSnxFe0.15)2O3 samples with x=0, 0.01, 0.03, and 0.05 were synthesized, where carrier concentration n was controlled by varying Sn doping concentration x. Strong room temperature ferromagnetism was observed. A systematic characterization and analysis of structure, purity, magnetic, and transport properties indicates that ferromagnetism is due to neither impurities nor charge carriers. The four samples were annealed in air and high vacuum alternately. The ferromagnetism signal disappears and appears accordingly. Based on these results, we conclude that room temperature ferromagnetism in (In0.85-xSnxFe0.15)2O3 system is closely and directly related to oxygen vacancies in the samples.
ACCESSION #
44150722

 

Related Articles

  • Effect of Non-Stoichiometry Oxygen Content on the Magnetization of LaSrNiO. Freeman, P. G.; Giblin, S. R.; Prabhakaran, D. // Journal of Superconductivity & Novel Magnetism;Apr2011, Vol. 24 Issue 3, p1149 

    We report on magnetization measurements of LaSrNiO for δ=0.01 and δ=−0.01. Zero field-cooled and field-cooled bulk magnetization measurements were performed parallel to the Ni-O planes of single crystals, and on a polycrystalline δ=0.01 sample. Striking differences in the...

  • Dislocation electrical conductivity of synthetic diamond films. Samsonenko, S. N.; Samsonenko, N. D. // Semiconductors;May2009, Vol. 43 Issue 5, p594 

    A relationship between the electric resistance of single-crystal homoepitaxial and polycrystalline diamond films and their internal structure has been investigated. It is established that the electrical conductivity of undoped homoepitaxial and polycrystalline diamond films is directly related...

  • Mictomagnetic Order in Cd0.87Cr1.93V0.06Se4 Semiconductor. Groń, T.; Malicka, E.; Zawisza, B.; Duda, H.; Krok-Kowalski, J.; Pacyna, A. W. // Acta Physica Polonica, A.;May2011, Vol. 119 Issue 5, p714 

    The complex ac dynamic magnetic susceptibility was used to study the mictomagnetic-like behavior in polycrystalline Cd0.87Cr1.93V0.06Se4 spinel. The temperature dependences of the zero field in-phase (real part) and out-of-phase (imaginary part) components of fundamental susceptibility measured...

  • Thermal conductivity of YbInCu[sub 4]. Smirnov, I. A.; Parfen’eva, L. S.; Jezowski, A.; Misiorek, H.; Krempel-Hesse, S.; Ritter, F.; Assmus, W. // Physics of the Solid State;Sep99, Vol. 41 Issue 9, p1418 

    The electrical and thermal conductivities of an YbInCu[sub 4] polycrystalline sample have been measured within the 4.2-300-K range. The behavior of the heat conductivity has been found to change sharply above and below T[sub v] = 70-75 K, the temperature corresponding to an isostructural phase...

  • Thermostimulated impurity conduction in characterization of electrodeposited Cu2O films. Rakhshani, A. E. // Journal of Applied Physics;2/15/1991, Vol. 69 Issue 4, p2290 

    Presents information on a study which proposed a novel thermostimulated conductivity (TSC) model to include the effect of impurity conduction. Deposition of polycrystalline films of cuprous oxide on stainless steel foils; Conductivity and TSC measurements carried out; Measurement of the...

  • Low-loss barium ferrite quasi-single-crystals for microwave application. Chen, Yajie; Geiler, Anton L.; Chen, Taiyang; Sakai, Tomokazu; Vittoria, C.; Harris, V. G. // Journal of Applied Physics;5/1/2007, Vol. 101 Issue 9, p09M501 

    Barium hexaferrites (BaFe12O19) are especially useful for microwave/millimeter devices. Due to large ferromagnetic resonance (FMR) loss (linewidths >2 kOe), traditional compacts of polycrystalline Ba ferrites indeed hinder the utilization of the materials for practical devices. The present...

  • Electrical and Magnetic Studies of the CdxCryVzSe4 Spinels. Groń, T.; Duda, H.; Malicka, E.; Zawisza, B.; Krok-Kowalski, J.; Pacyna, A. W. // Acta Physica Polonica, A.;Nov2009, Vol. 116 Issue 5, p969 

    The electrical and magnetic investigations carried out on the polycrystalline spinels with the general chemical formula CdxCryVzSe4 (where z = 0:06, 0.12, 0.24, and 0.31) revealed semiconducting and ferromagnetic properties with a Curie temperature of 127.5 K. A step-like structure of the...

  • Influence of Technological Conditions on the Superconducting Properties of Yttrium Based Rods. Churin, S. A. // Technical Physics Letters;Nov2006, Vol. 32 Issue 11, p993 

    The influence of thermocapillary phenomena on the current-voltage characteristics of polycrystalline rods of Y0.8Sm0.2Ba2Cu3O7-δ and Y1Ba2Cu3O7-δ-Y2BaCuO5 high-temperature superconductor (HTSC) compositions has been studied. A mechanism of the crystallization of HTSC materials based on...

  • Ferromagnetic hysteresis and aftereffect in polycrystalline TDAE-C60. Dunsch, L.; Eckert, D. // Journal of Applied Physics;4/16/1997, Vol. 81 Issue 8, p4611 

    Discusses the microscopic origin of ferromagnetic ordering as well as the existence of hysteresis in polycrystalline TDAE-60. Zero-field magnetization; Saturation magnetization; Agglomeration of superparamagnetic quantities.

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