sol-gel;
colossal magnetoresistance;
Mossbauer;
anisotropic hyperfine field fluctuation;
D O I:
10.1016/S0304-8853(00)00061-5
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
The perovskite (La0.67Ca0.33Mn0.97Fe0.03O3)-Fe-57 compound has been prepared by sol-gel method. Colossal magnetoresistance and magnetic properties of (La0.67Ca0.33Mn0.97Fe0.03O3)-Fe-57 has been studied using X-ray diffraction pattern, Rutherford back-scattering spectroscopy, Miissbauer spectroscopy and vibrating sample magnetometer. Crystalline (La0.67Ca0.33Mo0.97Fe0.03O3)-Fe-57 was a cubic perovskite structure with a lattice parameter a(0) = 3.859 Angstrom. Mossbauer spectra of (La0.67Ca0.33Mn0.97Fe0.03O3)-Fe-57 have been taken at various temperatures ranging from 4.2 K to room temperature. Analysis of Fe-57 Mossbauer spectrum data has considered nearest-neighbor interactions and anisotropic hyperfine field fluctuation. Analysis of Fe-57 Mossbauer data in terms of the local configurations of Mn atoms has permitted the influence of the magnetic hyperfine interaction to be monitored. The saturation magnetization of (La0.67Ca0.33Mn0.97Fe0.03O3)-Fe-57 is found to be 68 emu/g at 77 K. The Curie temperature, T-C, is determined to be 210 K. The temperature dependence of the resistance under zero and 10 kOe applied field shows that a semiconductor-metal transition, TSC-M, occurs at 200 K. The relative magnetoresistance, MR, is about 45%. (C) 2000 Elsevier Science B.V. All rights reserved.
机构:
Univ Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Univ Sfax, Fac Sci, Lab Phys Appl, BP 1171, Sfax 3000, TunisiaUniv Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Dhahri, A.
Zaouali, A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Sfax, Fac Sci, Lab Mat Multifonct & Applicat, Sfax 3000, TunisiaUniv Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Zaouali, A.
Benali, A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Univ Sfax, Fac Sci, Lab Phys Appl, BP 1171, Sfax 3000, Tunisia
Univ Aveiro, I3N, P-3810193 Aveiro, Portugal
Univ Aveiro, Phys Dept, P-3810193 Aveiro, PortugalUniv Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Benali, A.
Abdelmoulla, N.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Sfax, Fac Sci, Lab Phys Appl, BP 1171, Sfax 3000, TunisiaUniv Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Abdelmoulla, N.
Massoudi, J.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Sfax, Fac Sci, Lab Phys Appl, BP 1171, Sfax 3000, TunisiaUniv Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Massoudi, J.
Nouri, K.
论文数: 0引用数: 0
h-index: 0
机构:
CMTR, ICMPE, UMR CNRS UPEC 7182, 2 Rue Henri Dunant, F-94320 Thiais, France
Altran, 2 Rue Paul Dautier, F-78140 Velizy Villacoublay, FranceUniv Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Nouri, K.
Bessais, L.
论文数: 0引用数: 0
h-index: 0
机构:
CMTR, ICMPE, UMR CNRS UPEC 7182, 2 Rue Henri Dunant, F-94320 Thiais, FranceUniv Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
机构:Indira Gandhi Ctr Atom Res, Div Mat Sci, XS, CGS, Kalpakkam 603102, Tamil Nadu, India
Lakshmi, LS
Sridharan, V
论文数: 0引用数: 0
h-index: 0
机构:
Indira Gandhi Ctr Atom Res, Div Mat Sci, XS, CGS, Kalpakkam 603102, Tamil Nadu, IndiaIndira Gandhi Ctr Atom Res, Div Mat Sci, XS, CGS, Kalpakkam 603102, Tamil Nadu, India
Sridharan, V
Natarajan, DV
论文数: 0引用数: 0
h-index: 0
机构:Indira Gandhi Ctr Atom Res, Div Mat Sci, XS, CGS, Kalpakkam 603102, Tamil Nadu, India
Natarajan, DV
Rawat, R
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h-index: 0
机构:Indira Gandhi Ctr Atom Res, Div Mat Sci, XS, CGS, Kalpakkam 603102, Tamil Nadu, India
Rawat, R
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Chandra, S
Sastry, VS
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h-index: 0
机构:Indira Gandhi Ctr Atom Res, Div Mat Sci, XS, CGS, Kalpakkam 603102, Tamil Nadu, India
Sastry, VS
Radhakrishnan, TS
论文数: 0引用数: 0
h-index: 0
机构:Indira Gandhi Ctr Atom Res, Div Mat Sci, XS, CGS, Kalpakkam 603102, Tamil Nadu, India
机构:
Univ Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Univ Sfax, Fac Sci, Lab Phys Appl, BP 1171, Sfax 3000, TunisiaUniv Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Dhahri, A.
Zaouali, A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Sfax, Fac Sci, Lab Mat Multifonct & Applicat, Sfax 3000, TunisiaUniv Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Zaouali, A.
Benali, A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Univ Sfax, Fac Sci, Lab Phys Appl, BP 1171, Sfax 3000, Tunisia
Univ Aveiro, I3N, P-3810193 Aveiro, Portugal
Univ Aveiro, Phys Dept, P-3810193 Aveiro, PortugalUniv Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Benali, A.
Abdelmoulla, N.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Sfax, Fac Sci, Lab Phys Appl, BP 1171, Sfax 3000, TunisiaUniv Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Abdelmoulla, N.
Massoudi, J.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Sfax, Fac Sci, Lab Phys Appl, BP 1171, Sfax 3000, TunisiaUniv Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Massoudi, J.
Nouri, K.
论文数: 0引用数: 0
h-index: 0
机构:
CMTR, ICMPE, UMR CNRS UPEC 7182, 2 Rue Henri Dunant, F-94320 Thiais, France
Altran, 2 Rue Paul Dautier, F-78140 Velizy Villacoublay, FranceUniv Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
Nouri, K.
Bessais, L.
论文数: 0引用数: 0
h-index: 0
机构:
CMTR, ICMPE, UMR CNRS UPEC 7182, 2 Rue Henri Dunant, F-94320 Thiais, FranceUniv Coimbra, Phys Dept, CFisUC, Rua Larga, P-3004576 Coimbra, Portugal
机构:Indira Gandhi Ctr Atom Res, Div Mat Sci, XS, CGS, Kalpakkam 603102, Tamil Nadu, India
Lakshmi, LS
Sridharan, V
论文数: 0引用数: 0
h-index: 0
机构:
Indira Gandhi Ctr Atom Res, Div Mat Sci, XS, CGS, Kalpakkam 603102, Tamil Nadu, IndiaIndira Gandhi Ctr Atom Res, Div Mat Sci, XS, CGS, Kalpakkam 603102, Tamil Nadu, India
Sridharan, V
Natarajan, DV
论文数: 0引用数: 0
h-index: 0
机构:Indira Gandhi Ctr Atom Res, Div Mat Sci, XS, CGS, Kalpakkam 603102, Tamil Nadu, India
Natarajan, DV
Rawat, R
论文数: 0引用数: 0
h-index: 0
机构:Indira Gandhi Ctr Atom Res, Div Mat Sci, XS, CGS, Kalpakkam 603102, Tamil Nadu, India
Rawat, R
论文数: 引用数:
h-index:
机构:
Chandra, S
Sastry, VS
论文数: 0引用数: 0
h-index: 0
机构:Indira Gandhi Ctr Atom Res, Div Mat Sci, XS, CGS, Kalpakkam 603102, Tamil Nadu, India
Sastry, VS
Radhakrishnan, TS
论文数: 0引用数: 0
h-index: 0
机构:Indira Gandhi Ctr Atom Res, Div Mat Sci, XS, CGS, Kalpakkam 603102, Tamil Nadu, India