Crystallographically oriented Fe nanocrystals formed in Fe-implanted TiO2

被引：39

作者：

Zhou, Shengqiang ^{[1
]}

Talut, G. ^{[1
]}

Potzger, K. ^{[1
]}

Shalimov, A. ^{[1
]}

Grenzer, J. ^{[1
]}

Skorupa, W. ^{[1
]}

Helm, M. ^{[1
]}

Fassbender, J. ^{[1
]}

Cizmar, E. ^{[2
]}

Zvyagin, S. A. ^{[2
]}

Wosnitza, J. ^{[2
]}

机构：

[1] Forschungszentrum Dresden Rossendorf, Inst Ion Beam Phys & Mat Res, D-01314 Dresden, Germany

[2] Forschungszentrum Dresden Rossendorf, Dresden High Magnet Field Lab, HLD, D-01314 Dresden, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 103卷 / 08期

关键词：

D O I：

10.1063/1.2905236

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A comprehensive characterization of the structural and magnetic properties of Fe-implanted rutile TiO2(110) is presented. Fe and FeTiO3 (ilmenite) nanocrystals (NCs) are identified by synchrotron-radiation x-ray diffraction. The majority of Fe NCs are crystallographically oriented with respect to the matrix following the relation Fe(001)[010]parallel to TiO2(110)[10]. Postannealing induced the out-diffusion of Fe and the growth of FeTiO3 at the cost of Fe NCs. Mossbauer spectroscopy and superconducting quantum interference device (SQUID) magnetometry reveal the corresponding evolution of magnetic properties, i.e., magnetization, and superparamagnetic blocking temperature. We unambiguously identify Fe NCs as the origin of the ferromagnetism. These Fe NCs possess a uniaxial in-plane magnetic anisotropy, such that the two Fe[100] axes are inequivalent. (c) 2008 American Institute of Physics.

引用

页数：9

共 57 条

[21] Fe- and Ni-doped TiO2 thin films grown on LaAlO3 and SrTiO3 substrates by laser ablation [J].

Hong, NH ;

Prellier, W ;

Sakai, J ;

Hassini, A .

APPLIED PHYSICS LETTERS, 2004, 84 (15) :2850-2852

[22] Investigation of the magnetic susceptibility of nanocomposites obtained in zero-field-cooled conditions [J].

Jacobsohn, LG ;

Hundley, MF ;

Thompson, JD ;

Dickerson, RM ;

Nastasi, M .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 2006, 24 (01) :321-325

[23] High-Curie-temperature ferromagnetism in self-organized Ge1-xMnx nanocolumns [J].

Jamet, Matthieu ;

Barski, Andre ;

Devillers, Thibaut ;

Poydenot, Valier ;

Dujardin, Romain ;

Bayle-Guillemaud, Pascale ;

Rothman, Johan ;

Bellet-Amalric, Edith ;

Marty, Alain ;

Cibert, Joel ;

Mattana, Richard ;

Tatarenko, Serge .

NATURE MATERIALS, 2006, 5 (08) :653-659

[24] Co clustering and ferromagnetism in chemical vapor deposited Ti1-xCoxO2-δ thin films [J].

Kang, Sueng-Hee ;

Nguyen, Hoa ;

Quynh, Thi ;

Yoon, Soon-Gil ;

Kim, Eui-Tae ;

Lee, Zonghoon ;

Radmilovic, Velimir .

APPLIED PHYSICS LETTERS, 2007, 90 (10)

[25] Ferromagnetism and structure of epitaxial Cr-doped anatase TiO2 thin films [J].

Kaspar, TC ;

Droubay, T ;

Shutthanandan, V ;

Heald, SM ;

Wang, CM ;

McCready, DE ;

Thevuthasan, S ;

Bryan, JD ;

Gamelin, DR ;

Kellock, AJ ;

Toney, MF ;

Hong, X ;

Ahn, CH ;

Chambers, SA .

PHYSICAL REVIEW B, 2006, 73 (15)

[26] Negligible magnetism in excellent structural quality CrxTi1-xO2 anatase:: Contrast with high-TC ferromagnetism in structurally defective CrxTi1-xO2 -: art. no. 217203 [J].

Kaspar, TC ;

Heald, SM ;

Wang, CM ;

Bryan, JD ;

Droubay, T ;

Shutthanandan, V ;

Thevuthasan, S ;

McCready, DE ;

Kellock, AJ ;

Gamelin, DR ;

Chambers, SA .

PHYSICAL REVIEW LETTERS, 2005, 95 (21)

[27] Ferromagnetism induced by clustered Co in Co-doped anatase TiO2 thin films -: art. no. 017401 [J].

Kim, JY ;

Park, JH ;

Park, BG ;

Noh, HJ ;

Oh, SJ ;

Yang, JS ;

Kim, DH ;

Bu, SD ;

Noh, TW ;

Lin, HJ ;

Hsieh, HH ;

Chen, CT .

PHYSICAL REVIEW LETTERS, 2003, 90 (01)

[28] Growth and properties of molecular beam epitaxially grown ferromagnetic Fe-doped TiO2 rutile films on TiO2(110) [J].

Kim, YJ ;

Thevuthasan, S ;

Droubay, T ;

Lea, AS ;

Wang, CM ;

Shutthanandan, V ;

Chambers, SA ;

Sears, RP ;

Taylor, B ;

Sinkovic, B .

APPLIED PHYSICS LETTERS, 2004, 84 (18) :3531-3533

[29] Ion-beam-produced structural defects in ZnO [J].

Kucheyev, SO ;

Williams, JS ;

Jagadish, C ;

Zou, J ;

Evans, C ;

Nelson, AJ ;

Hamza, AV .

PHYSICAL REVIEW B, 2003, 67 (09)

[30] Magnetic properties and tunneling magnetoresistance effect in Fe-CdFeS granular films [J].

Liu, K. W. ;

Zhang, J. Y. ;

Shen, D. Z. ;

Wu, X. J. ;

Li, B. H. ;

Li, B. S. ;

Lu, Y. M. ;

Fan, X. W. .

APPLIED PHYSICS LETTERS, 2007, 90 (09)

← 1 2 3 4 5 6 →