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Neutron scattering studies on magnetic structure of the double-layered manganite La2−2xSr1+2xMn2O7 (0.30≤x≤0.50)

✍ Scribed by M Kubota; H Fujioka; K Ohoyama; K Hirota; Y Moritomo; H Yoshizawa; Y Endoh

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 73 KB
Volume: 60
Category: Article
ISSN: 0022-3697
DOI: 10.1016/s0022-3697(99)00068-2

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✦ Synopsis

Systematic powder diffraction studies have been carried out to establish the magnetic phase diagram of La 2Ϫ2x Sr 1ϩ2x Mn 2 O 7 (LSMO327) in a wide hole concentration range (0.30 Յ x Յ 0.50), using the HERMES diffractometer. LSMO327 exhibits a planar ferromagnetic structure for 0.32 Յ x Յ 0.38 at low temperatures. A finite canting angle between planar magnetic moments on neighboring planes starts appearing around x ϳ 0.40 and reaches 180Њ (A-type antiferromagnet) at x 0.48. At x 0.30, on the contrary, the magnetic moments are aligned parallel to the c-axis.

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