Effect of annealing conditions on the Fe incorporation and ferromagnetism of Sn1-xFexO2:: A Raman spectroscopic investigation

被引：18

作者：

Mathew, Xavier ^{[1
]}

Hays, J.

Mejia-Garcia, C.

Contreras-Puente, G.

Punnoose, A.

机构：

[1] Univ Nacl Autonoma Mexico, CIE, Temixco 62580, Morelos, Mexico

[2] Boise State Univ, Dept Phys, Boise, ID 83725 USA

[3] IPN, Escuela Super Fis & Matemat, Mexico City 07738, DF, Mexico

来源：

JOURNAL OF APPLIED PHYSICS | 2006年 / 99卷 / 08期

关键词：

D O I：

10.1063/1.2162344

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In order to investigate the effect of annealing conditions on the structural and magnetic properties, we have employed detailed Raman spectroscopic investigations on 5% Fe-doped SnO2 samples annealed at different temperatures in the range 200-900 degrees C. Systematic changes observed in the Raman spectra with increasing annealing temperature are correlated with similar changes in the structural and magnetic properties of these samples. The presence of incorporated Fe ions was confirmed from the appearance of vibrational local modes of Fe in the Raman spectra. It is concluded that the ferromagnetism in Sn0.95Fe0.05O2 annealed in the 350-600 degrees C temperature range is due to the incorporated Fe ions and is destroyed completely when TA>600 degrees C due to the expulsion of Fe from the SnO2 lattice, which is in agreement with the disappearance of the Fe local modes in the Raman spectra. (C) 2006 American Institute of Physics.

引用

页数：3

共 17 条

[1] Structural characterization of nanocrystalline SnO2 by X-ray and Raman spectroscopy [J].

Abello, L ;

Bochu, B ;

Gaskov, A ;

Koudryavtseva, S ;

Lucazeau, G ;

Roumyantseva, M .

JOURNAL OF SOLID STATE CHEMISTRY, 1998, 135 (01) :78-85

[2]

BILZ H, 1979, PHONON DISPERSION RE, P135

[3] Strong room-temperature ferromagnetism in Co2+-doped TiO2 made from colloidal nanocrystals [J].

Bryan, JD ;

Heald, SM ;

Chambers, SA ;

Gamelin, DR .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (37) :11640-11647

[4] Ferromagnetism in Fe-doped SnO2 thin films [J].

Coey, JMD ;

Douvalis, AP ;

Fitzgerald, CB ;

Venkatesan, M .

APPLIED PHYSICS LETTERS, 2004, 84 (08) :1332-1334

[5] A combined EXAFS and diffraction study of pure and doped nanocrystalline tin oxide [J].

Davis, SR ;

Chadwick, AV ;

Wright, JP .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (48) :9901-9908

[6] Structural and magnetic properties of a series of low-doped Zn1-xCoxO thin films deposited from Zn and Co metal targets on (0001) Al2O3 substrates [J].

Fouchet, A ;

Prellier, W ;

Padhan, P ;

Simon, C ;

Mercey, B ;

Kulkarni, VN ;

Venkatesan, T .

JOURNAL OF APPLIED PHYSICS, 2004, 95 (11) :7187-7189

[7] LATTICE-DYNAMICS OF OXIDES WITH RUTILE STRUCTURE AND INSTABILITIES AT THE METAL-SEMICONDUCTOR PHASE-TRANSITIONS OF NBO2 AND VO2 [J].

GERVAIS, F ;

KRESS, W .

PHYSICAL REVIEW B, 1985, 31 (08) :4809-4814

[8] DYNAMICS OF RUTILE STRUCTURE .3. LATTICE DYNAMICS, INFRARED AND RAMAN SPECTRA OF SNO2 [J].

KATIYAR, RS ;

DAWSON, P ;

HARGREAV.MM ;

WILKINSO.GR .

JOURNAL OF PHYSICS PART C SOLID STATE PHYSICS, 1971, 4 (15) :2421-+

[9] Room-temperature ferromagnetism in transparent transition metal-doped titanium dioxide [J].

Matsumoto, Y ;

Murakami, M ;

Shono, T ;

Hasegawa, T ;

Fukumura, T ;

Kawasaki, M ;

Ahmet, P ;

Chikyow, T ;

Koshihara, S ;

Koinuma, H .

SCIENCE, 2001, 291 (5505) :854-856

[10] High temperature ferromagnetism with a giant magnetic moment in transparent Co-doped SnO2-δ -: art. no. 077205 [J].

Ogale, SB ;

Choudhary, RJ ;

Buban, JP ;

Lofland, SE ;

Shinde, SR ;

Kale, SN ;

Kulkarni, VN ;

Higgins, J ;

Lanci, C ;

Simpson, JR ;

Browning, ND ;

Das Sarma, S ;

Drew, HD ;

Greene, RL ;

Venkatesan, T .

PHYSICAL REVIEW LETTERS, 2003, 91 (07)

← 1 2 →