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
  • [31] On the room temperature ferromagnetism in Co-doped TiO2 films
    Punnoose, A
    Seehra, MS
    Park, WK
    Moodera, JS
    [J]. JOURNAL OF APPLIED PHYSICS, 2003, 93 (10) : 7867 - 7869
  • [32] Dilution and clustering of Fe in the rutile phases of TiO2 and SnO2
    Rykov, A. I.
    Nomura, K.
    Sakuma, J.
    Barrero, C.
    Yoda, Y.
    Mitsui, T.
    [J]. PHYSICAL REVIEW B, 2008, 77 (01)
  • [33] Ferromagnetism on a paramagnetic host background:: the case of rutile TM:TiO2 single crystals (TM = Cr, Mn, Fe, Co, Ni, Cu)
    Sangaletti, L.
    Mozzati, M. C.
    Galinetto, P.
    Azzoni, C. B.
    Speghini, A.
    Bettinelli, M.
    Calestani, G.
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2006, 18 (32) : 7643 - 7650
  • [34] Ferromagnetism in laser deposited anatase Ti1-xCoxO2-δ films -: art. no. 115211
    Shinde, SR
    Ogale, SB
    Das Sarma, S
    Simpson, JR
    Drew, HD
    Lofland, SE
    Lanci, C
    Buban, JP
    Browning, ND
    Kulkarni, VN
    Higgins, J
    Sharma, RP
    Greene, RL
    Venkatesan, T
    [J]. PHYSICAL REVIEW B, 2003, 67 (11) : 6
  • [35] Co-occurrence of superparamagnetism and anomalous Hall effect in highly reduced cobalt-doped rutile TiO2-δ films -: art. no. 166601
    Shinde, SR
    Ogale, SB
    Higgins, JS
    Zheng, H
    Millis, AJ
    Kulkarni, VN
    Ramesh, R
    Greene, RL
    Venkatesan, T
    [J]. PHYSICAL REVIEW LETTERS, 2004, 92 (16) : 166601 - 1
  • [36] Iron and cobalt co-doping of single crystalline titanium dioxide
    Silva, C.
    Cruz, M. M.
    da Silva, R. C.
    Alves, L. C.
    Godinho, M.
    [J]. INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 2010, 200
  • [37] Studies on Structural, Magnetic and Thermal Properties of xFe2TiO4-(1-x)Fe3O4 (0 ≤ x ≤ 1) Pseudo-binary System
    Sorescu, Monica
    Xu, Tianhong
    Wise, Adam
    Diaz-Michelena, Marina
    McHenry, Michael E.
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2012, 324 (07) : 1453 - 1462
  • [38] Talut G, 2009, HYPERFINE INTERACT, V191, P95, DOI [10.1007/s10751-009-9958-z, 10.1007/s10751-009-9958-Z]
  • [39] Room Temperature Ferromagnetic Semiconductor Rutile Ti1-xCoxO2-δ Epitaxial Thin Films Grown by Sputtering Method
    Yamasaki, Takashi
    Fukumura, Tomoteru
    Nakano, Masaki
    Ueno, Kazunori
    Kawasaki, Masashi
    [J]. APPLIED PHYSICS EXPRESS, 2008, 1 (11) : 1113021 - 1113023
  • [40] Crystallographically oriented Fe nanocrystals formed in Fe-implanted TiO2
    Zhou, Shengqiang
    Talut, G.
    Potzger, K.
    Shalimov, A.
    Grenzer, J.
    Skorupa, W.
    Helm, M.
    Fassbender, J.
    Cizmar, E.
    Zvyagin, S. A.
    Wosnitza, J.
    [J]. JOURNAL OF APPLIED PHYSICS, 2008, 103 (08)
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