Effect of Dy doping on magnetism of La0.7Sr0.3CoO3 system

稀有金属（英文版）, 2012, 31(2): 135-139. doi: 10.1007/s12598-012-0478-7

^1, , ^2, , ^3, , ^4,

1.College of Science, Anhui Science and Technology University, Fengyang 233100, China; Anhui Key Laboratory of Spin Electron and Nanomaterials(Cultivating Base), Suzhou College, Suzhou 234000, China

2.Anhui Key Laboratory of Spin Electron and Nanomaterials(Cultivating Base), Suzhou College, Suzhou 234000, China; National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China

3.Anhui Key Laboratory of Spin Electron and Nanomaterials(Cultivating Base), Suzhou College, Suzhou 234000, China

4.Anhui Key Laboratory of Spin Electron and Nanomaterials(Cultivating Base), Suzhou College, Suzhou 234000, China

Effect of Dy doping on magnetism of La0.7Sr0.3CoO3 system

LIU Ning ^1, , YAN Guoqing ^2, , ZHU Guang ^3, , GUO Huanyin ^4,

1.College of Science, Anhui Science and Technology University, Fengyang 233100, China; Anhui Key Laboratory of Spin Electron and Nanomaterials(Cultivating Base), Suzhou College, Suzhou 234000, China

2.Anhui Key Laboratory of Spin Electron and Nanomaterials(Cultivating Base), Suzhou College, Suzhou 234000, China; National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China

3.Anhui Key Laboratory of Spin Electron and Nanomaterials(Cultivating Base), Suzhou College, Suzhou 234000, China

4.Anhui Key Laboratory of Spin Electron and Nanomaterials(Cultivating Base), Suzhou College, Suzhou 234000, China

Keywords： magnetic structure

The effect of Dy doping on magnetism of La0. 7Sr0. 3CoO3 system was studied through the measurements of M-T curves and M-H curves. The results show that with Dy content increasing, Tc decreases, M weakens, the coercive force strengthens, and the samples exhibit the abnormal phenomenon that M increases continuously with T decreasing in low temperature range. Research indicates that the variation of magnetism in the system comes from the changes of lattice parameters and magnetic environment caused by Dy doping and from the spin-state transition of Co ions induced by Dy ions.

参考文献

[1]	刘宁,徐素军,郭焕银,童伟,张裕恒.A位的Sm掺杂对La0.67Sr0.33MnO3体系磁电性质的影响[J].物理学报,2005(02):912-919.
[2]	Chainani A;Mathew M;Sarma D.D .Electron-spec-troscopy study of the semiconductor-metal transition in La1-xSrxCoO3[J].Physical Review B,1996,46(16):9976.
[3]	Mahendiran R;Raychaudhuri A.K .Magnetoresistance of the spin-state-transition compound La1-xSrxCoO3[J].Physical Review B,1996,54(22):16044.
[4]	郭焕银,刘宁,蔡之让,张裕恒.Mn位W掺杂对La0.3Ca0.7MnO3体系磁结构的影响[J].物理学报,2006(02):865-872.
[5]	蔡之让,刘宁,童伟,张裕恒.Dy的高掺杂对La0.7Sr0.3MnO3体系磁电性质的影响[J].物理学报,2005(02):920-929.
[6]	Saitoh T.;Fujimori A.;Abbate M.;Takeda Y.;Takano M.;Mizokawa T. .ELECTRONIC STRUCTURE AND MAGNETIC STATES IN LA1-XSRXCOO3 STUDIED BY PHOTOEMISSION AND X-RAY-ABSORPTION SPECTROSCOPY[J].Physical Review.B.Condensed Matter,1997(3):1290-1295.
[7]	Takahashi H.;Yamanaka M.;Munakata F. .Ab initio study of the electronic structures in LaCoO3-SrCoO3 systems[J].Physical Review.B.Condensed Matter,1998(24):15211-15218.
[8]	彭振生,唐永刚,严国清,郭焕银,毛强.La0.67Sr0.08Na0.25MnO3的奇特输运性质及CMR效应[J].物理学报,2007(03):1707-1712.
[9]	Caciuffo R.;Barucca G.;Mira J.;Rivas J.;Senaris-Rodriguez MA.;Radaelli PG.;Fiorani D.;Goodenough JB.;Rinaldi D. .Structural details and magnetic order of La1-xSrxCoO3 (x <= 0.3)[J].Physical Review.B.Condensed Matter,1999(2):1068-1078.
[10]	Raccah P.M;Goodenough J.B .First-order localized-electron collective-electron transition in LaCoO3[J].Physical Review,1967,155(03):932.
[11]	Asai K;Gehring P;Chou H;Shirane G .Temperature-induced magnetism in LaCoO3[J].Physical Review B,1989,40(16):10982.
[12]	LIU Ning,YAN GuoQing,CAI ZhiRang,PI Li,ZHANG Bei,TONG Wei.Special magnetic phenomena in heavily doped La0.7-xDyxSr0.3MnO3 system[J].中国科学G辑（英文版）,2008(01):90-97.
[13]	Guo ZB.;Ding WP.;Du YW.;Huang H. .FERROMAGNETIC STATE WITH SPIN CANTING IN LA0.52GD0.15CA0.33MNO3[J].Physical Review.B.Condensed Matter,1997(17):10789-10792.
[14]	严国清,谢凯旋,莫仲荣,路忠林,邹文琴,王申,岳凤娟,吴镝,张凤鸣,都有为.共沉淀法制备Co掺杂ZnO的室温铁磁性的研究[J].物理学报,2009(02):1237-1241.
[15]	Sun Y;Xu X.J;Zhang Y.H .Electronic structure and magnetic states in La1-xSrxCoO3 studied by photoemission and x-ray-absorption spectroscopy[J].Physical Review B,2000,62(04):1829.
[16]	Su M.M;Cao S.X;Gao J;Yuan S.J Kang B.J Shao L.M and Zhang J.C .Magnetic field induced phase transition and transport properties in phase separated Eu0.5Sr0.5MnO3 system[J].Acta Physica Sinica,2009,58(04):3309.
[17]	张开成.Sherrington-Kirkpatric自旋玻璃模型的非平衡态性质[J].物理学报,2009(08):5673-5678.
[18]	李晓娟,王强.晶粒尺寸对Bi0.2Ca0.8MnO3电荷有序的影响[J].物理学报,2009(09):6482-6486.

上一张下一张

上一张下一张

计量

下载量()
访问量()

作者相关

在本站搜索
在百度学术搜索
在万方数据库搜索
在CNKI搜索

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%