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Magnetic order in geometrically frustrated Gd_{2}(Ti_{1-x}Zr_{x})_{2}O_{7} (x=0.02 and 0.15) single crystals
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Liao, Da-Qian, Leeson, Mark S., Baker, Daniel William, Paul, Don McK. and Balakrishnan, Geetha (2011) Magnetic order in geometrically frustrated Gd_{2}(Ti_{1-x}Zr_{x})_{2}O_{7} (x=0.02 and 0.15) single crystals. Physical Review B (Condensed Matter and Materials Physics), Volume 83 (Number 6). article no.064403 . doi:10.1103/PhysRevB.83.064403
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Official URL: http://dx.doi.org/10.1103/PhysRevB.83.064403
Abstract
Single crystals of Gd(2)(Ti(1-x)Zr(x))(2)O(7) with x = 0.02 and 0.15 have been used to investigate the effects of Zr doping on the properties of the geometrically frustrated antiferromagnet Gd(2)Ti(2)O(7). Powder and single-crystal x-ray data, along with optical birefringence measurements, reveal that the x = 0.02 sample retains the cubic Fd (3) over barm structure of pure Gd(2)Ti(2)O(7), while the x = 0.15 composition adopts a tetragonal I4(1)/amd structure. Low-temperature magnetization and specific heat measurements show that for Gd(2)(Ti(0.98)Zr(0.02))(2)O(7) there are two magnetic transitions at T(N1) = 1.02 K and T(N2) = 0.70 K, but for Gd(2)(Ti(0.85)Zr(0.15))(2)O(7) a single transition is observed at T(N1) = 1.02 K. Changes in the specific heat with a magnetic field applied along the [110] and the [111] directions are used to construct the H-T phase diagrams for both samples.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
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| Divisions: | Faculty of Science > Engineering Faculty of Science > Physics |
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| Library of Congress Subject Headings (LCSH): | Gadolinium -- Magnetic properties, Metal crystals -- Magnetic properties, Antiferromagnetism, Rare earths -- Magnetic properties, Crystallography, X-rays -- Diffraction | ||||
| Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 1098-0121 | ||||
| Official Date: | 2011 | ||||
| Dates: |
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| Volume: | Volume 83 | ||||
| Number: | Number 6 | ||||
| Page Range: | article no.064403 | ||||
| DOI: | 10.1103/PhysRevB.83.064403 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), European Regional Development Fund (ERDF), Advantage West Midlands (AWM) |
Data sourced from Thomson Reuters' Web of Knowledge
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