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2009 | 115 | 5 | 925-930
Article title

Magnet with Ferromagnetic Nearest-Neighbor and Antiferromagnetic Next-Nearest-Neighbor Exchange Interactions

Content
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EN
Abstracts
EN
Magnetic properties of Pb[Cu(SO_4)(OH)_2] (linarite) natural single crystals were studied by magnetization and specific heat measurements. The angular dependences of magnetization were revealed which correlated with the regularities of the crystal structure. At about 2.8 K this quasi-one-dimensional Heisenberg system undergoes a phase transition to the long-range antiferromagnetic order with antiparallel magnetic moments aligned probably along the b-axis. The antiferromagnetic order is evidenced by the metamagnetic transition and pronounced λ-type anomaly at T_N in the specific heat. Using phenomenological modeling based on a quantum transfer-matrix method, we argue that at higher temperatures linarite is a quasi-one-dimensional system with competing ferromagnetic nearest-neighbor and antiferromagnetic next-nearest-neighbor exchange interactions.
Keywords
Year
Volume
115
Issue
5
Pages
925-930
Physical description
Dates
published
2009-05
received
2008-10-28
(unknown)
2009-03-25
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv115n514kz
Identifiers
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