Micro-Raman and XPS studies of pure ZnO ceramics

被引：269

作者：

Das, J. ^{[1
]}

Pradhan, S. K. ^{[2
]}

Sahu, D. R. ^{[3
]}

Mishra, D. K. ^{[4
]}

Sarangi, S. N. ^{[5
]}

Nayak, B. B. ^{[4
]}

Verma, S. ^{[5
]}

Roul, B. K. ^{[2
]}

机构：

[1] Silicon Inst Technol, Dept Phys, Bhubaneswar 751024, Orissa, India

[2] Inst Mat Sci Agh, Bhubaneswar 751013, Orissa, India

[3] Univ Witwatersrand, Sch Phys, ZA-2050 Johannesburg, South Africa

[4] Inst Minerals & Mat Technol CSIR, Adv Mat Technol Dept, Bhubaneswar 751013, Orissa, India

[5] Inst Phys, Bhubaneswar 751004, Orissa, India

来源：

PHYSICA B-CONDENSED MATTER | 2010年 / 405卷 / 10期

关键词：

Room temperature ferromagnetism; Lattice defect; X-ray photoelectron spectroscopy; Zinc interstitial; MAGNETIC-PROPERTIES; BULK; FERROMAGNETISM; SPECTROSCOPY; FILMS;

D O I：

10.1016/j.physb.2010.03.020

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We observed that ZnO bulk ceramics prepared by solid state reaction route at 1300 C exhibited unexpected room temperature ferromagnetic (RTFM) property. In the absence of any magnetic impurity the cause of room temperature ferromagnetic signal in the undoped system is certainly attributed to various kinds of native defects such as oxygen vacancies (V-O) or zinc interstitials (I-zn) and their clusters created inside the bulk ceramics during heating by slow step sintering schedule (SSSS). The micro-Raman investigation and X-ray photoelectron spectroscopy studies on the ZnO sample sintered at high temperature confirm the presence of such lattice defects. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2492 / 2497

页数：6

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