Magnetic properties of the 6H Perovskite Ba3Fe2TeO9
<p>A polycrystalline sample of Ba<sub>3</sub>Fe<sub>2</sub>TeO<sub>9</sub> having the 6H perovskite structure has been prepared in a solid-state reaction and studied by a combination of electron microscopy, Mössbauer spectroscopy, magnetometry, X-ray diffra...
| Main Authors: | , , , , |
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| 格式: | Journal article |
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Elsevier
2017
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| 总结: | <p>A polycrystalline sample of Ba<sub>3</sub>Fe<sub>2</sub>TeO<sub>9</sub> having the 6H perovskite structure has been prepared in a solid-state reaction and studied by a combination of electron microscopy, Mössbauer spectroscopy, magnetometry, X-ray diffraction and neutron diffraction. Partial ordering of Fe<sup>3+</sup> and Te<sup>6+</sup> cations occurs over the six-coordinate sites; the corner-sharing octahedra are predominantly occupied by the former and the face-sharing octahedra by a 1:1 mixture of the two. On cooling through the temperature range 18 < T/K < 295 an increasing number of spins join an antiferromagnetic backbone running through the structure while the remainder show complex relaxation effects. At 3 K an antiferromagnetic phase and a spin glass coexist.</p> |
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