Local structures in Pb1-xMnxTe systems
2007
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Authors
Radisavljević, IvanaIvanović, Nenad
Novaković, Nikola
Romčević, Nebojša Ž.
Mitrić, Miodrag
Andrić, Velibor
Mahnke, Heinz-Eberhard
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The semimagnetic semiconductor Pb1-xMnxTe is a good representative of IV-VI narrow-gap semiconductors, the class of materials in which phenomena like variation of the band gap with composition, negative magnetoresistance, long-term non-equilibrium processes, and the phonon dispersion anomalies, have been readily observed. The off-centering effects (i.e. displacement of the atoms from the regular lattice positions), and related low temperature ferroelectric phase transition, are also characteristic of these systems. In the attempt to resolve exact positions of both constitutive and impurity atoms, possibilities and features of their ordering and (or) clustering, and configurational and thermal disorder in the systems, we have performed EXAFS measurements at DESY-HASYLAB X1 and A1 beam lines, on Te and Mn absorption K-edges, for samples with different Mn concentrations (x = 0.002, 0.02, 0.1) at room temperature and 10 K. The results reveal that these systems are intrinsically quite disor...dered. The most significant deviations of the local structure from that predicted by X-ray diffraction measurements are found around Mn atoms, and increase with Mn concentration. Copyright (c) 2007 John Wiley and Sons, Ltd.
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X-Ray Spectrometry, 2007, 36, 3, 150-157Note:
- European X-Ray Spectrometry Conference (EXRS 2006), Jun 19-23, 2006, Paris, France
DOI: 10.1002/xrs.955
ISSN: 0049-8246
WoS: 000246164200002
Scopus: 2-s2.0-34248207625
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VinčaTY - JOUR AU - Radisavljević, Ivana AU - Ivanović, Nenad AU - Novaković, Nikola AU - Romčević, Nebojša Ž. AU - Mitrić, Miodrag AU - Andrić, Velibor AU - Mahnke, Heinz-Eberhard PY - 2007 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6654 AB - The semimagnetic semiconductor Pb1-xMnxTe is a good representative of IV-VI narrow-gap semiconductors, the class of materials in which phenomena like variation of the band gap with composition, negative magnetoresistance, long-term non-equilibrium processes, and the phonon dispersion anomalies, have been readily observed. The off-centering effects (i.e. displacement of the atoms from the regular lattice positions), and related low temperature ferroelectric phase transition, are also characteristic of these systems. In the attempt to resolve exact positions of both constitutive and impurity atoms, possibilities and features of their ordering and (or) clustering, and configurational and thermal disorder in the systems, we have performed EXAFS measurements at DESY-HASYLAB X1 and A1 beam lines, on Te and Mn absorption K-edges, for samples with different Mn concentrations (x = 0.002, 0.02, 0.1) at room temperature and 10 K. The results reveal that these systems are intrinsically quite disordered. The most significant deviations of the local structure from that predicted by X-ray diffraction measurements are found around Mn atoms, and increase with Mn concentration. Copyright (c) 2007 John Wiley and Sons, Ltd. T2 - X-Ray Spectrometry T1 - Local structures in Pb1-xMnxTe systems VL - 36 IS - 3 SP - 150 EP - 157 DO - 10.1002/xrs.955 ER -
@article{ author = "Radisavljević, Ivana and Ivanović, Nenad and Novaković, Nikola and Romčević, Nebojša Ž. and Mitrić, Miodrag and Andrić, Velibor and Mahnke, Heinz-Eberhard", year = "2007", abstract = "The semimagnetic semiconductor Pb1-xMnxTe is a good representative of IV-VI narrow-gap semiconductors, the class of materials in which phenomena like variation of the band gap with composition, negative magnetoresistance, long-term non-equilibrium processes, and the phonon dispersion anomalies, have been readily observed. The off-centering effects (i.e. displacement of the atoms from the regular lattice positions), and related low temperature ferroelectric phase transition, are also characteristic of these systems. In the attempt to resolve exact positions of both constitutive and impurity atoms, possibilities and features of their ordering and (or) clustering, and configurational and thermal disorder in the systems, we have performed EXAFS measurements at DESY-HASYLAB X1 and A1 beam lines, on Te and Mn absorption K-edges, for samples with different Mn concentrations (x = 0.002, 0.02, 0.1) at room temperature and 10 K. The results reveal that these systems are intrinsically quite disordered. The most significant deviations of the local structure from that predicted by X-ray diffraction measurements are found around Mn atoms, and increase with Mn concentration. Copyright (c) 2007 John Wiley and Sons, Ltd.", journal = "X-Ray Spectrometry", title = "Local structures in Pb1-xMnxTe systems", volume = "36", number = "3", pages = "150-157", doi = "10.1002/xrs.955" }
Radisavljević, I., Ivanović, N., Novaković, N., Romčević, N. Ž., Mitrić, M., Andrić, V.,& Mahnke, H.. (2007). Local structures in Pb1-xMnxTe systems. in X-Ray Spectrometry, 36(3), 150-157. https://doi.org/10.1002/xrs.955
Radisavljević I, Ivanović N, Novaković N, Romčević NŽ, Mitrić M, Andrić V, Mahnke H. Local structures in Pb1-xMnxTe systems. in X-Ray Spectrometry. 2007;36(3):150-157. doi:10.1002/xrs.955 .
Radisavljević, Ivana, Ivanović, Nenad, Novaković, Nikola, Romčević, Nebojša Ž., Mitrić, Miodrag, Andrić, Velibor, Mahnke, Heinz-Eberhard, "Local structures in Pb1-xMnxTe systems" in X-Ray Spectrometry, 36, no. 3 (2007):150-157, https://doi.org/10.1002/xrs.955 . .