Observation of magnetic Bragg peaks in quasi-one-dimensional antiferromagnet Cu6Ge6O18-xD2O (x  =  0, 6)

doi:10.1088/1742-6596/150/4/042051

Observation of magnetic Bragg peaks in quasi-one-dimensional antiferromagnet Cu₆Ge₆O_18-xD₂O (x = 0, 6)

Masashi Hase et al 2009 J. Phys.: Conf. Ser. 150 042051 (4pp) doi: 10.1088/1742-6596/150/4/042051

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Masashi Hase¹, Noriki Terada¹, Hiroyuki S Suzuki¹, Hideaki Kitazawa¹, Kiyoshi Ozawa¹, Koji Kaneko², Naoto Metoki², Masaaki Matsuda² and Kazuhisa Kakurai²
¹ National Institute for Materials Science (NIMS), 1–2–1 Sengen, Tsukuba, Ibaraki 305–0047, Japan
² Japan Atomic Energy Agency (JAEA), 2–4 Shirakata Shirane, Tokai, Naka, Ibaraki 319–1195, Japan
E-mail: HASE.Masashi@nims.go.jp

Abstract. The cuprates Cu₆Ge₆O_18-xD₂O (x = 0, 6) have spin-1/2 chains with first-and second-nearest-neighbor (1NN and 2NN) antiferromagnetic (AF) exchange interactions. Magnetic long-range order (LRO) appears below 74 and 39 K for x = 0 and 6, respectively. We observed two magnetic Bragg peaks in each sample in neutron diffraction measurements on powder samples. These peaks indicate appearance of collinear AF LRO. We confirmed that both the 1NN interaction and nearest-neighbor interchain interaction were AF.

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Observation of magnetic Bragg peaks in quasi-one-dimensional antiferromagnet Cu₆Ge₆O_18-xD₂O (x = 0, 6)

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