Home > Publications database > Crystal and magnetic structure of single-crystal La1-xSrxMnO3 (x ~ 1/8) > print

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024 7 _ |2 DOI
|a 10.1140/epjb/e2009-00019-5
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037 _ _ |a PreJuSER-3497
041 _ _ |a eng
082 _ _ |a 530
084 _ _ |2 WoS
|a Physics, Condensed Matter
100 1 _ |0 P:(DE-Juel1)144092
|a Li, H.-F.
|b 0
|u FZJ
245 _ _ |a Crystal and magnetic structure of single-crystal La1-xSrxMnO3 (x ~ 1/8)
260 _ _ |a Berlin
|b Springer
|c 2009
300 _ _ |a 149 - 157
336 7 _ |a Journal Article
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336 7 _ |a JOURNAL_ARTICLE
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336 7 _ |a article
|2 DRIVER
440 _ 0 |0 1982
|a European Physical Journal B
|v 67
|x 1434-6028
500 _ _ |a Record converted from VDB: 12.11.2012
520 _ _ |a A neutron powder diffraction (NPD) study on the crystal and magnetic structure of a crushed La1-xSrxMnO3 (x approximate to 1/8) single crystal has been performed. The sample belongs to orthorhombic (Pnma, O) above the Jahn-Teller (JT) transition temperature (T-JT) and monoclinic (P12(1)/c1, M') in the JT regime. We have also refined the NPD data below the charge/orbital ordering (CO/OO) temperature (T-CO/OO) with a monoclinic (P12(1)/c1, M'') model because the experimental resolution was insufficient to clearly identify a triclinic (P (1) over bar) structure. The refined lattice parameters show an obvious breathing-mode distortion between T-CO/OO and T-JT, accompanied by a large deviation of the monoclinic angle beta from 90 degrees, signifying a very strong cooperative JT distortion. A ferromagnetic (FM) moment of 3.43(5) mu(B)/Mn besides an A-type antiferromagnetic (A-AFM) moment of 0.54(2) mu(B)/Mn is directed mainly along the b axis in P12(1)/c1 symmetry at 5 K. With increasing temperature, the A-AFM domains transform into FM ones above similar to 100 K and the FM spin orientation turns from the b to the c axis in crystallographic b-c plane below T-c = 187(1) K. The magnetization measurements show typical anomalies around T-CO/OO and T-JT. The measured saturation moment of 3.9(1) mu(B)/Mn at 70 kOe and 5 K is well consistent with the sum 3.97(5) mu(B)/Mn of the refined FM and A-AFM moments at 5 K, implying the A-AFM spins are aligned in field direction at 70 kOe. The applied magnetic field can affect the paramagnetic insulating (PMI) state in the range of magnetic polarons. Based on the size of JT distortion and the bond-valence sums (BVS's), the CO/OO phenomenon is being discussed.
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|a Kondensierte Materie
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|a Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI)
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|a Forschungs-Neutronenquelle Heinz Maier-Leibnitz
|e DNS: Diffuse scattering neutron time of flight spectrometer
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|a Forschungs-Neutronenquelle Heinz Maier-Leibnitz
|e SPODI: High resolution powder diffractometer
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700 1 _ |0 P:(DE-Juel1)130991
|a Su, Y.
|b 1
|u FZJ
700 1 _ |0 P:(DE-Juel1)131047
|a Xiao, Y. G.
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700 1 _ |0 P:(DE-Juel1)VDB57858
|a Persson, J.
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700 1 _ |0 P:(DE-Juel1)130836
|a Meuffels, P.
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700 1 _ |0 P:(DE-Juel1)130572
|a Brückel, T.
|b 5
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856 7 _ |u http://dx.doi.org/10.1140/epjb/e2009-00019-5
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