Paramagnetism in Mn/Fe implanted ZnO

被引：34

作者：

Gunnlaugsson, H. P. ^{[1
]}

Molholt, T. E. ^{[2
]}

Mantovan, R. ^{[3
]}

Masenda, H. ^{[4
]}

Naidoo, D. ^{[4
]}

Dlamini, W. B. ^{[5
]}

Sielemann, R. ^{[6
]}

Bharuth-Ram, K. ^{[5
,7
]}

Weyer, G. ^{[1
]}

Johnston, K. ^{[8
]}

Langouche, G. ^{[9
]}

Olafsson, S. ^{[2
]}

Gislason, H. P. ^{[2
]}

Kobayashi, Y. ^{[10
]}

Yoshida, Y. ^{[11
]}

Fanciulli, M. ^{[3
,12
]}

机构：

[1] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark

[2] Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland

[3] CNR IMM MDM Lab, I-20041 Agrate Brianza, MB, Italy

[4] Univ Witwatersrand, Sch Phys, ZA-2050 Wits, South Africa

[5] Univ KwaZulu Natal, Sch Phys, ZA-4001 Durban, South Africa

[6] Helmholtz Zentrum Berlin Mat & Energie, D-14109 Berlin, Germany

[7] iThemba Labs, ZA-7129 Somerset W, South Africa

[8] ISOLDE CERN, PH Dept, CH-1211 Geneva 23, Switzerland

[9] Univ Louvain, Inst Kern En Stralings Fys, B-3001 Louvain, Belgium

[10] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

[11] Shizuoka Inst Sci & Technol, Shizuoka 4378555, Japan

[12] Univ Milano Bicocca, Dept Mat Sci, I-20125 Milan, Italy

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 14期

关键词：

MOSSBAUER-SPECTRA; ZINC-OXIDE; SEMICONDUCTORS; FERROMAGNETISM; TEMPERATURE;

D O I：

10.1063/1.3490708

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Prompted by the generally poor understanding of the nature of magnetic phenomena in 3d-metal doped ZnO, we have undertaken on-line (57)Fe Mossbauer spectroscopy on ZnO single crystals in an external magnetic field of 0.6 T, following the implantation of radioactive (57)Mn ions at room temperature. The Mossbauer spectra of the dilute Fe impurities are dominated by sextets whose angular dependence rules out an ordered magnetic state (which had been previously proposed) but are well accounted for on the basis of Fe(3+) paramagnetic centers on substitutional Zn sites with unusually long relaxation times (> 20 ns). (C) 2010 American Institute of Physics. [doi:10.1063/1.3490708]

引用

页数：3

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