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Magnetic and magnetoelectric properties of single crystals with Y-type hexaferrite structure
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10.1063/1.3622332
/content/aip/journal/jap/110/3/10.1063/1.3622332
http://aip.metastore.ingenta.com/content/aip/journal/jap/110/3/10.1063/1.3622332
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Schematic crystal structure of . The magnetic structure consists of alternate stacks of spin bunches of L (red) and S (blue) blocks, along the hexagonal c axis, having large and small magnetic moments, respectively. (b) The lattice constants a (open squares) and c (closed circles) at room temperature as a function of Sr concentration x.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Temperature dependence of in-plane magnetization of crystals with x = 0, 0.25, 0.5, 0.75, 1.0, 1.25, and 1.5. The measurements were carried out at 0.01 T. Inverted triangles denote the transition point from the ferrimagnetic to screw magnetic ordered state for the respective crystals. (b) Magnetic phase diagram for the system in the T-x plane. Open squares and closed inverted triangles denote the Néel temperature and the ferrimagnetic-screw transition points, respectively.

Image of FIG. 3.
FIG. 3.

(Color online) Magnetic-field dependence of (a) the in-plane magnetization and (b) the electric polarization for selected crystals at 20 K. The inset shows a schematic experimental configuration. The magnetization data in (a) are vertically offset for clear comparison.

Image of FIG. 4.
FIG. 4.

Magnetic-field dependence of (a) the in-plane magnetization, (b) relative permittivity, and (c) electric polarization in an x = 1.5 crystal at 20 K.

Image of FIG. 5.
FIG. 5.

(Color online) Magnetic-field dependence of (a) in-plane magnetization and (b) electric polarization of the x = 1.5 crystal at selected temperatures. (c) Magnetic phase diagram for the x = 1.5 crystal in the T-B plane. The magnetization data in (a) are vertically offset for clear comparison.

Image of FIG. 6.
FIG. 6.

(Color online) (a) The L-scan profiles of 1 0 L in the absence of external magnetic fields at selected temperatures between 10 and 300 K for the x = 1.5 crystal [intensities are plotted in a logarithmic scale.]. (b) Temperature dependence of turn angle Φ0 calculated from the magnetic satellite peak for the x = 1.5 crystal. The inset shows a proposed screw magnetic structure.

Image of FIG. 7.
FIG. 7.

The L-scan profiles of 1 0 L at (a) 10 K and (b) 100 K for the x = 1.5 crystal at B = 0, 0.3, 0.5, and 0.8 T [intensities are plotted in a logarithmic scale]. IM-I and IM-II stand for the intermediate I and II, respectively.

Image of FIG. 8.
FIG. 8.

(a) (Color online) Temperature dependence of intensity of the 1 0 1 and the 1 0 -1/2 reflections at B = 0.8 T. A dashed line indicates the boundary between the intermediate I and II phases. (b) A possible magnetic structure of the intermediate I phase.

Image of FIG. 9.
FIG. 9.

(Color online) Magnetic-field dependence of (a) in-plane magnetization and (b) electric polarization at selected temperatures for an annealed x = 1.5 crystal. (c) Magnetic phase diagram for as-grown (dashed lines) and annealed (solid lines) x = 1.5 crystals. The magnetization data in (a) are vertically offset for clear comparison.

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/content/aip/journal/jap/110/3/10.1063/1.3622332
2011-08-15
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Magnetic and magnetoelectric properties of Ba2-xSrxNi2Fe12O22single crystals with Y-type hexaferrite structure
http://aip.metastore.ingenta.com/content/aip/journal/jap/110/3/10.1063/1.3622332
10.1063/1.3622332
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