Ferromagnetism in Co-Doped CaO Nanopowder

您当前的位置：

首页 >

文章列表页 >

Ferromagnetism in Co-Doped CaO Nanopowder

更新时间：2025-07-09

- Ferromagnetism in Co-Doped CaO Nanopowder
- Vol. 45, Issue 11, Pages: 112-115(2011)
- 作者机构：
  
  中国科学院半导体研究所半导体照明研发中心,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC： TB34
- Online First：10 November 2011，
  
  Published：2011
- 稿件说明：
移动端阅览
Ferromagnetism in Co-Doped CaO Nanopowder[J]. 2011, 45(11): 112-115.
DOI：

Ferromagnetism in Co-Doped CaO Nanopowder[J]. 2011, 45(11): 112-115. DOI：

摘要

利用固态反应法制备了具有铁磁性的Co掺杂CaO纳米粉末材料

并对材料的结构和磁学性质进行了研究.X射线衍射和高分辨率透射电镜测试结果表明

材料为单相的CaO立方结构

Co掺杂导致了晶格常数的减小

表明Co离子通过替位Ca离子融入了CaO晶格.磁性分析表明

该Co掺杂CaO纳米粉末表现出了明显的铁磁特性

临界温度高于70 K.通过分析认为

材料的铁磁性是由浅施主缺陷O空位与Co离子耦合形成束缚磁极化子引起的.

Abstract

The Co-doped CaO nanopowder was prepared by solid-state synthesis method. The structural and magnetic properties were investigated. X-ray diffraction and high resolution transmission electron microscopy studies show single-phase cubic CaO and distinct contraction of the lattice with Co doping

indicating an actual incorporation of Co ions into the CaO lattice. The magnetic studies show that the Co-doped CaO nanopowder displays a clear ferromagnetism behavior with the critical temperature higher than 70 K. The analysis suggests that the ferromagnetism is induced by the bound magnetic polarons due to O vacancies and Co ions coupling.

关键词

Keywords

references

常凯,夏建白.稀磁半导体:自旋和电荷的桥梁[J].物理, 2004, 33(6): 414-418.

CHANG Kai, XIA Jianbai. Diluted magnetic semiconductors: bridging spin and charge [J]. Physics, 2004, 33(6): 414-418.

UEDA K, TABATA H, KAWAI T. Magnetic and electric properties of transition-metal-doped ZnO films [J]. Applied Physics Letter, 2001, 79(7): 988-990.

修向前,李斌斌,张荣,等.Ni掺杂ZnO基稀磁半导体的性质[J].半导体学报, 2007, 28(S1): 145-148.

XIU Xiangqian, LI Binbin, ZHANG Rong, et al. Property of Ni-doped ZnO-based DMSs [J]. Chinese Journal of Semiconductors, 2007, 28(S1): 145-148.

COEY J M D, DOUVALIS A P, FITZGERALD C B, et al. Ferromagnetism in Fe-doped SnO2 films [J]. Applied Physics Letter, 2004, 84(8): 1332-1334.

CHAMBERS S A, THEVUTHASAN S, FARROW R F C, et al. Epitaxial growth and properties of ferromagnetic Co-doped TiO anatase [J]. Applied Physics Letter, 2001, 79(21): 3467-3469.

JOSEPH D P, KUMAR G S, VENKATESWARAN C. Structural, magnetic and optical studies of Zn0.95Mn0.05O DMS[J]. Materials Letters, 2005, 59(21): 2720-2724.

匡安龙, 刘兴翀, 路忠林,等.稀释磁性半导体的Sn1-xMnxO2室温铁磁性[J].物理学报, 2005, 54(6): 2934-2937.

KUANG Anlong, LIU Xingchong, LU Zhonglin, et al. Room-temperature ferromagnetism in Mn-doped SnO2 diluted magnetic semiconductor [J]. Chinese Physics, 2005, 54(6): 2934-2937.

KENMOCHI K, SEIKE M, SATO K, et al. New class of diluted ferromagnetic semiconductors based on CaO without transition metal elements [J]. Japanese Journal of Applied Physics, 2004, 43(3): 934-936.

ELFIMOV S, YUNOKI S, SAWATZKY G A. Possible path to a new class of ferromagnetic and half-metallic ferromagnetic materials [J]. Physical Review Letters, 2002, 89(21): 216403-216406.

OSORIO-GUILLEN J, LANY S, BARABASH S V, et al. Magnetism without magnetic ions: percolation, exchange, and formation energies of magnetism-promoting intrinsic defects in CaO [J]. Physical Review Letters, 2006, 96(10): 107203-107206.

RIETVELD H M. A profile refinement method for nuclear and magnetic structures [J]. Journal of Applied Crystallography, 1969, 2(2): 65-71.

GAO Daqiang, LI Jinyun, LI Zhuoxin, et al. Defect-mediated magnetism in pure CaO nanopowders [J]. The Journal of Physical Chemistry: C, 2001, 114(27): 11703-11707.

COEY J M D, VENKATESAN M, FITZGERALD C B. Donor impurity band exchange in dilute ferromagnetic oxides [J]. Nature Materials, 2005, 4(2): 173-179.

Co掺杂ZnO纳米粉体的结构和光学性能. 西安交通大学学报, 2011, 45(7): 65-69.

全耗尽围栅金属氧化物半导体场效应管二维模型. 西安交通大学学报, 2011, 45(2): 73-77.

金属银负载型SiO2杂化膜的制备与性能表征. 西安交通大学学报, 2010, 44(12): 87-92.

围栅金属氧化物半导体场效应管电流模型. 西安交通大学学报, 2010, 44(10): 57-61.

射频溅射功率密度对Ga:ZnO透明导电薄膜性能的影响. 西安交通大学学报, 2010, 44(8): 58-62.

一种围栅金属氧化物半导体场效应管阈值电压模型. 西安交通大学学报, 2010, 44(2): 77-81.

溶胶-凝胶法制备La3+、碳纳米管掺杂纳米TiO2及光催化性能. 西安交通大学学报, 2008, 42(10): 1304-1308.

铁掺杂纳米二氧化钛介孔材料的合成、结构与性能. 西安交通大学学报, 2008, 42(9): 1184-1188.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effects of Steam Addition on the Swirl Combustion and Emission Characteristics of Cracked Ammonia

Electrothermal Coupling Research on the Evolutionary Law of Anti-Corona Performance for High-Altitude Air-Cooled Generators

A Fast Calculation Method for Thermal Flow Fields in Transformer Windings Based on PI-DeepONet

Study on the Thermodynamic Properties in the Anomalous Region of Supercritical Water

Numerical Simulation of the Energy Conversion Process in Thermoacoustic Engines with Different Stack Materials

Related Author

No data

Related Institution

No data

⁰