Induction and control of room-temperature ferromagnetism in dilute Fe-doped SrTiO3 ceramics

The magnetic characteristics of dilute Fe-doped SrTiO3 ceramics are studied. The room-temperature ferromagnetism (with transition temperature around 650 K) is successfully realized in Sr0.98Ti0.9Fe0.1O3−δ and Sr0.98Ti0.92Fe0.1O3−δ ceramics. It is found that a fine-tuning of the components could alter the substitution sites of Fe ions and in-turn modulates the magnetism of the material. A systematic analysis reveals that the co-substitution of Fe ions at nonequivalent A and B sites in ABO3 type perovskites is in favor of the ferromagnetism, which could be attributed to the mixed-valence-states of Fe ions and the variation of exchange interactions. This work provides an innovation for the induction and control of ferromagnetism in dilute magnetic materials.

[1]  Jingkui Liang,et al.  Spin glass behavior in A-site ordered YBaMn2O6 compound , 2013 .

[2]  E. Dimitriu,et al.  Multiferroic perovskite (Pb0.845Sm0.08Fe0.035)(Ti0.98Mn0.02)O3 with ferroelectric and weak ferromagnetic properties , 2013 .

[3]  David J. Smith,et al.  Oxygen vacancy-mediated room-temperature ferromagnetism in insulating cobalt-substituted SrTiO3 epitaxially integrated with silicon , 2013 .

[4]  Dong Hun Kim,et al.  The effect of A-site substitution of Ce and La on the magnetic and electronic properties of Sr(Ti0.6Fe0.4)O(3-δ) films. , 2012, Inorganic chemistry.

[5]  C. Meneghini,et al.  Evidence of oxygen-vacancy-induced ferromagnetic order in single crystal Mn-doped SrTiO3 , 2012 .

[6]  Yiping Guo,et al.  Ferroelectricity and superparamagnetism in Sr/Ti nonstoichiometric SrTiO3 , 2012 .

[7]  C. Zhang,et al.  Study on magnetic and dielectric properties of YMnO3 ceramics , 2011 .

[8]  Dong Hun Kim,et al.  Magnetoelastic effects in SrTi1−xMxO3 (M = Fe, Co, or Cr) epitaxial thin films , 2011 .

[9]  R. Eichel,et al.  Defect structure of the mixed ionic–electronic conducting Sr[Ti,Fe]Ox solid-solution system — Change in iron oxidation states and defect complexation , 2011 .

[10]  M. Blamire,et al.  Origin of magnetism in La and Fe doped SrTiO3−δ films , 2010 .

[11]  U. Waghmare,et al.  Tuning of dielectric properties and magnetism of SrTiO(3) by site-specific doping of Mn , 2010, 1009.4792.

[12]  P. Mandal,et al.  Magnetocaloric effect in HoMnO3 crystal , 2010 .

[13]  B. Yun,et al.  Magnetic Property of α-Fe2O3 Nanoparticles Prepared by Sonochemistry and Take-off Technique , 2010 .

[14]  P. Vilarinho,et al.  (Sr,Mn)TiO3: a magnetoelectric multiglass. , 2008, Physical review letters.

[15]  Caroline A. Ross,et al.  Magnetic and magneto-optical properties of Fe-doped SrTiO3 films , 2008 .

[16]  J. Purans,et al.  Jahn-Teller distortion around Fe{sup 4+} in Sr(Fe{sub x}Ti{sub 1-x})O{sub 3-{delta}} from x-ray absorption spectroscopy, x-ray diffraction, and vibrational spectroscopy , 2007 .

[17]  L. Chou,et al.  Magnetic and Electrical Characterizations of Half‐Metallic Fe3O4 Nanowires , 2007 .

[18]  A. Wokaun,et al.  Investigation of HNCO adsorption and hydrolysis on Fe-ZSM5 , 2007 .

[19]  Ellen Ivers-Tiffée,et al.  Electronic Structure, Defect Chemistry, and Transport Properties of SrTi1-xFexO3-y Solid Solutions , 2006 .

[20]  S. Ogale,et al.  Search for ferromagnetism in conductive Nb:SrTiO3 with magnetic transition element (Cr, Co, Fe, Mn) dopants , 2006 .

[21]  Young Sun,et al.  Exchange bias associated with phase separation in the perovskite cobaltite La 1 − x Sr x CoO 3 , 2006 .

[22]  D. Jiles,et al.  Temperature dependence of magnetic anisotropy in Mn-substituted cobalt ferrite , 2006 .

[23]  R. Waser,et al.  Switching the electrical resistance of individual dislocations in single-crystalline SrTiO3 , 2006, Nature materials.

[24]  L. M. Wang.  Anomalous Hall effect in La0.7Sr0.3MnO3/SrTiO3 superlattices: hopping transport and a probe of dimensionality. , 2006, Physical review letters.

[25]  P. Joy,et al.  Effect of disorder on the magnetic properties of LaMn0.5Fe0.5O3 , 2005 .

[26]  A. Fert,et al.  Co-doped (La, Sr)TiO(3-delta) : a high Curie temperature diluted magnetic system with large spin polarization. , 2005, Physical review letters.

[27]  M. Salamon,et al.  Intrinsic interface exchange coupling of ferromagnetic nanodomains in a charge ordered manganite , 2005, cond-mat/0507307.

[28]  Akira Ohtomo,et al.  A high-mobility electron gas at the LaAlO3/SrTiO3 heterointerface , 2004, Nature.

[29]  J. Maier,et al.  SrTiO3: a model electroceramic , 2003 .

[30]  R. Evarestov,et al.  Single impurities in insulators: Ab initio study of Fe-doped SrTiO 3 , 2003 .

[31]  N. Hur,et al.  Reentrant spin glass behavior in Cr-doped perovskite manganite. , 2002, Physical review letters.

[32]  Brian H. Toby,et al.  EXPGUI, a graphical user interface for GSAS , 2001 .

[33]  Sabino Veintemillas-Verdaguer,et al.  Surface and Internal Spin Canting in γ-Fe2O3 Nanoparticles , 1999 .

[34]  H. Anderson,et al.  Structural characteristics of Sr1−xLaxTi3+δ as a function of oxygen partial pressure at 1400 °C , 1989 .

[35]  R. D. Shannon.  Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides , 1976 .

[36]  E. R. Pfeiffer,et al.  Superconducting transition temperatures of semiconducting SrTiO sub 3. , 1967 .

[37]  T. Clevenger.  Effect of Fe4+ in the System SrFeO3‐SrTiO3 , 1963 .

[38]  Philip W. Anderson,et al.  Antiferromagnetism. Theory of Superexchange Interaction , 1950 .

[39]  P. Adler,et al.  Structural Properties, Mössbauer Spectra, and Magnetism of Perovskite‐Type Oxides SrFe1–xTixO3–y , 2000 .