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Magnetic structure and magneto-elastic-structural coupling in Cr-modified SrRuO3: A neutron powder diffraction study
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10.1063/1.3554716
/content/aip/journal/jap/109/7/10.1063/1.3554716
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/7/10.1063/1.3554716

Figures

Image of FIG. 1.
FIG. 1.

Rietveld plot of the neutron powder diffraction pattern of SrRu0.88Cr0.12O3 (SRC-12) at 300 and 4 K. The filled circles represent the observed data points. The vertical bars indicate the positions of the calculated Bragg peaks. Only nuclear structure is considered in the fits shown (by continuous line) here. The insets show the fit of the first prominent Bragg peak. The misfit in the intensity is clearly noticeable at 4K.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Temperature dependence of field-cooled (FC) magnetization of SraRu0.88Cr0.12O3 at 3 T filed. Inset shows the magnetic hysteresis of SrRu0.88Cr0.12O3 at four representative temperatures.

Image of FIG. 3.
FIG. 3.

(Color online) Rietvled fits at 4 K in a limited two theta range corresponding to four different types of magnetic structures (see text).

Image of FIG. 4.
FIG. 4.

(Color online) Crystal structure of SrRu0.88Cr0.12O3 as a framework of corner-shared tilted and distorted Ru(Cr)O6 octahedra with Sr (larger spheres) in cavities. Orientation of Ru(Cr) magnetic moments is shown by arrows.

Image of FIG. 5.
FIG. 5.

(Color online) Temperature dependence of the magnetic moment of Ru/Cr as obtained from Rietveld refinement of the magnetic structure (Γ3).

Image of FIG. 6.
FIG. 6.

Temperature variation of the (a) orthorhombic a and b, (b) orthorhorhombic c parameter, and (c) unit cell volume. The continuous lines through the data points is the best fit curves obtained usingEq. ((1)) (see text).

Image of FIG. 7.
FIG. 7.

(Color online) (a)Temperature variation of the spontaneous axial (along the a, b, and c axes) and volume strains. Inset shows the variation of spontaneous volume strain with square of magnetization.

Image of FIG. 8.
FIG. 8.

(Color online) Variation of the in-phase and out-of-phase octahedral tilt angle with temperature.

Tables

Generic image for table
Table I.

Structural parameters of SrRu0.88Cr0.12O3 refined with orthorhombic (Pbnm) structure model.

Generic image for table
Table II.

Basis vectors for the atoms of the 4b site of the orthorhombic perovskite structure (space group Pbnm, k = 0).

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/content/aip/journal/jap/109/7/10.1063/1.3554716
2011-04-05
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Magnetic structure and magneto-elastic-structural coupling in Cr-modified SrRuO3: A neutron powder diffraction study
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/7/10.1063/1.3554716
10.1063/1.3554716
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