Antiferromagnetism induced by oxygen vacancies in V2O5 polycrystals synthesized by the Pechini method

被引：12

作者：

Dreifus, D. ^{[1
]}

Godoy, M. P. F. ^{[1
]}

Rabelo, A. C. ^{[2
]}

Rodrigues, A. D. ^{[1
]}

Gobato, Y. G. ^{[1
]}

Camargo, P. C. ^{[1
]}

Pereira, E. C. ^{[2
]}

de Oliveira, A. J. A. ^{[1
]}

机构：

[1] Univ Fed Sao Carlos UFSCar, Dept Fis, Sao Carlos, SP, Brazil

[2] Univ Fed Sao Carlos UFSCar, Dept Quim, Sao Carlos, SP, Brazil

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2015年 / 48卷 / 44期

基金：

巴西圣保罗研究基金会;

关键词：

vanadium pentoxide; antiferromagnetism; oxygen vacancies; optical properties; magnetic properties; X-RAY-DIFFRACTION; VANADIUM-OXIDES; ELECTRONIC-STRUCTURE; OPTICAL-ABSORPTION; RAMAN-SCATTERING; THIN-FILMS; PHOTOLUMINESCENCE; MICROSCOPY; MAGNETISM; POLARON;

D O I：

10.1088/0022-3727/48/44/445002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Optical and magnetic properties of V2O5 polycrystals were investigated through photoluminescence (PL) and magnetization measurements. The PL spectra comprise two main bands attributed to oxygen vacancies and to band-edge-related transitions. The magnetization measurements showed a predominant paramagnetic behavior in the temperature range studied (5 K-300 K) with a superimposed peak around 80 K associated with an antiferromagnetic phase. The temperature dependence of the magnetic results and the relative PL intensity presented a remarkable correlation while in the range of 80-200 K the intensity associated with oxygen vacancies became considerably more intense than band-to-band emissions, the same range in which the antiferromagnetic transition was observed. The observation of an antiferromagnetic phase in V2O5 was predicted in the literature although this result had not previously been measured experimentally. Raman spectroscopy was used as a complementary technique in order to exclude the presence of spurious vanadium oxide phases in the sample.

引用

页数：7

共 59 条

[1]

Acharya BS, 2008, INDIAN J PURE AP PHY, V46, P866

[2] OPTICAL BEHAVIOR OF SPUTTER-DEPOSITED VANADIUM PENTOXIDE [J].

AITA, CR ;

LIU, YL ;

KAO, ML ;

HANSEN, SD .

JOURNAL OF APPLIED PHYSICS, 1986, 60 (02) :749-753

[3]

[Anonymous], 2000, General Structure Analysis System-GSAS/EXPGUI

[4] Comparative Study of Ni- and Co-Substituted ZnO Nanoparticles: Synthesis, Optical, and Magnetic Properties [J].

Balti, Imen ;

Mezni, Amine ;

Dakhlaoui-Omrani, Amel ;

Leone, Philippe ;

Viana, Bruno ;

Brinza, Ovidiu ;

Smiri, Leila-Samia ;

Jouini, Noureddine .

JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (32) :15758-15766

[5] Structural, electronic and magnetic properties of the surfaces of tetragonal and cubic HfO2 [J].

Beltran, J. I. ;

Munoz, M. C. ;

Hafner, J. .

NEW JOURNAL OF PHYSICS, 2008, 10

[6]

Benmoussa M., 2003, Active and Passive Electronic Components, V26, P245, DOI 10.1080/0882751031000116223

[7] STRUCTURAL, ELECTRICAL AND OPTICAL-PROPERTIES OF SPUTTERED VANADIUM PENTOXIDE THIN-FILMS [J].

BENMOUSSA, M ;

IBNOUELGHAZI, E ;

BENNOUNA, A ;

AMEZIANE, EL .

THIN SOLID FILMS, 1995, 265 (1-2) :22-28

[8] Oxygen-vacancy-induced room-temperature magnetization in lamellar V2O5 thin films [J].

Cezar, A. B. ;

Graff, I. L. ;

Varalda, J. ;

Schreiner, W. H. ;

Mosca, D. H. .

JOURNAL OF APPLIED PHYSICS, 2014, 116 (16)

[9] d0 ferromagnetism [J].

Coey, JMD .

SOLID STATE SCIENCES, 2005, 7 (06) :660-667

[10] Magnetic properties of vanadium oxide nanotubes and nanolayers [J].

Demishev, S. V. ;

Chernobrovkin, A. L. ;

Glushkov, V. V. ;

Grigorieva, A. V. ;

Goodilin, E. A. ;

Ohta, H. ;

Okubo, S. ;

Fujisawa, M. ;

Sakurai, T. ;

Sluchanko, N. E. ;

Samarin, N. A. ;

Semeno, A. V. .

PHYSICAL REVIEW B, 2011, 84 (09)

← 1 2 3 4 5 6 →