Rau, C.Eichner, S.2015-04-242015-04-241986Rau, C. and Eichner, S.. "Evidence for ferromagnetic order at gadolinium surfaces above the bulk Curie temperature." <i>Physical Review B,</i> 34, no. 9 (1986) American Physical Society: 6347. http://dx.doi.org/10.1103/PhysRevB.34.6347.https://hdl.handle.net/1911/79651The electron-spin polarization P at the topmost layer of atomically clean, magnetized gadolinium (Gd) surfaces is measured by using electron capture spectroscopy. P varies almost linearly with temperature between 160 K (P=-42%) and 315 K (P=0). It is found that the surface Curie temperature TCs is far above—lying near 310 K—the bulk Curie temperature TCb=292.5 K, indicating uniaxial anisotropic magnetic exchange interactions at the topmost surface layer of Gd.engArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.Journal articlehttp://dx.doi.org/10.1103/PhysRevB.34.6347