Phys. Rev. Lett. 75, 2031-2034 (1995)

                                                                                [Issue 10 - September 1995 ]

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Magnetic Frustration in Ultrathin Fe Films

       H. J. Elmers, J. Hauschild, H. Fritzsche, G. Liu, and U. Gradmann 
       Physikalisches Institut, Technische Universität Clausthal, D 38678 Clausthal-Zellerfeld, Germany

       U. Köhler 
       Institute für Experimentalphysik, Universität Kiel, D 24098 Kiel, Germany

Received 25 January 1995

In Fe(110) films prepared at 300 K on W(110), ferromagnetic long range order is suppressed in a range of coverages between 1.20 and 1.48 pseudomorphic monolayers, whereas below and above this gap of long range order,
monolayer and double layer ferromagnetism is observed with Curie temperatures of 230 and roughly 450 K, respectively. Apparently, the frustration of long range order in the gap is caused by indirect interactions of electronic
origin between double layer islands, mediated by the surrounding monolayer and its W substrate.

©1995 The American Physical Society

URL: http://publish.aps.org/abstract/PRL/v75/p2031
PACS: 75.70.Ak, 75.50.Lk, 75.60.Jp