Magnetic and electrical characterization of TiO2 single crystals co-implanted with iron and cobalt

被引：9
作者：
Silva, C. [1 ,2 ]
Costa, A. R. G. [1 ,3 ]
da Silva, R. C. [3 ]
Alves, L. C. [4 ]
Ferreira, L. P. [1 ,5 ]
Carvalho, M. D. [6 ,7 ]
Franco, N. [3 ]
Godinho, M. [1 ,2 ]
Cruz, M. M. [1 ,2 ]
机构：
[1] Univ Lisbon, Fac Ciencias, Ctr Fis Materia Condensada, P-1749016 Lisbon, Portugal
[2] Univ Lisbon, Fac Ciencias, Dept Fis, P-1749016 Lisbon, Portugal
[3] Univ Lisbon, Inst Super Tecn, IPFN, P-2685066 Bobadela Lrs, Portugal
[4] Univ Lisbon, Inst Super Tecn, C2TN, P-2685066 Bobadela Lrs, Portugal
[5] Univ Coimbra, Dept Phys, P-3004516 Coimbra, Portugal
[6] Univ Lisbon, Fac Ciencias, Ctr Quim & Bioquim, P-1749016 Lisbon, Portugal
[7] Univ Lisbon, Fac Ciencias, Dept Quim & Bioquim, P-1749016 Lisbon, Portugal
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2014年 / 364卷
关键词：
Diluted magnetic semiconductor; Magnetic nano-aggregate; Implanted rutile; Magnetoresistance; ROOM-TEMPERATURE FERROMAGNETISM; DOPED TIO2; THIN-FILMS; ANISOTROPIC FERROMAGNETISM; ION-IMPLANTATION; RUTILE; FE; CONDUCTIVITY; LOCATION; GROWTH;
D O I：
10.1016/j.jmmm.2014.04.022
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Single crystals of TiO2 ruffle were co implanted with iron and cobalt to investigate the combined role of these ions in the magnetic properties of the system. The implantations were carried out using an energy of 150 keV and different fluences to investigate their influence in the magnetic and electrical properties of the implanted samples. For the higher fluences the as implanted single crystals exhibit super paramagnetic behaviour associated with the formation of nanosizal magnetic aggregates. Annealing treatments were performed at 673 K and 1073 K, inducing recovery of the lattice structure and the evolution of the formed phases lion and cobalt play different roles in the implanted region, the presence of iron inhibiting the formation of cobalt aggregates during annealing at 1073 K. (C) 2014 Elsevier BY. All rights reserved.
引用
收藏
页码：106 / 116
页数：11
相关论文
共 41 条
  • [1] Anisotropic ferromagnetism in Co-implanted TiO2 rutile
    Akdogan, N.
    Rameev, B. Z.
    Khaibullin, R. I.
    Westphalen, A.
    Tagirov, L. R.
    Aktas, B.
    Zabel, H.
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2006, 300 (01) : E4 - E7
  • [2] High-temperature ferromagnetism in Co-implanted TiO2 rutile
    Akdogan, Numan
    Nefedov, Alexei
    Zabel, Hartmut
    Westerholt, Kurt
    Becker, Hans-Werner
    Somsen, Christoph
    Goek, Afak
    Bashir, Asif
    Khaibullin, Rustam
    Tagirov, Lenar
    [J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2009, 42 (11)
  • [3] HOPPING CONDUCTIVITY IN DISORDERED SYSTEMS
    AMBEGAOKAR, V
    HALPERIN, BI
    LANGER, JS
    [J]. PHYSICAL REVIEW B-SOLID STATE, 1971, 4 (08): : 2612 - +
  • [4] Hydrothermal growth of ferromagnetic Fe-doped TiO2 films
    Chan, Kelvin Y. S.
    Goh, Gregory K. L.
    [J]. THIN SOLID FILMS, 2008, 516 (16) : 5582 - 5585
  • [5] Ferromagnetism in defect-ridden oxides and related materials
    Coey, J. M. D.
    Stamenov, P.
    Gunning, R. D.
    Venkatesan, M.
    Paul, K.
    [J]. NEW JOURNAL OF PHYSICS, 2010, 12
  • [6] Oxide Dilute Magnetic Semiconductors-Fact or Fiction?
    Coey, J. M. D.
    Chambers, S. A.
    [J]. MRS BULLETIN, 2008, 33 (11) : 1053 - 1058
  • [7] Lattice location and electrical conductivity in ion implanted TiO2 single crystals
    Fromknecht, R
    Auer, R
    Khubeis, I
    Meyer, O
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1996, 120 (1-4) : 252 - 256
  • [8] Ion implantation in TiO2:: damage production and recovery, lattice site location and electrical conductivity
    Fromknecht, R
    Khubeis, I
    Massing, S
    Meyer, O
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1999, 147 (1-4) : 191 - 201
  • [9] Intrinsic ferromagnetism in insulating cobalt doped anatase TiO2 -: art. no. 157204
    Griffin, KA
    Pakhomov, AB
    Wang, CM
    Heald, SM
    Krishnan, KM
    [J]. PHYSICAL REVIEW LETTERS, 2005, 94 (15)
  • [10] STUDY OF IRON-ION IMPLANTATION IN RUTILE SINGLE-CRYSTALS
    GUERMAZI, M
    MAREST, G
    PEREZ, A
    SAWICKA, BD
    SAWICKI, JA
    THEVENARD, P
    TYLISZCZAK, T
    [J]. MATERIALS RESEARCH BULLETIN, 1983, 18 (05) : 529 - 538
12345