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Structural and thermodynamic properties of equilibrated ultrathin Pd-Au, Cu-Ag, and Co-Ag alloys on Ru(0001) were studied and are comparatively discussed. These studies provide a framework for a detailed understanding of the energetics of surface alloy formation.

Additionally, the differences between the two bulk immiscible systems (Cu-Ag and Co-Ag) and the bulk miscible Pd-Au system are discussed.

The specific heat of a polycrystalline sample of MnO was measured from T ≈ 1 K to T ≈ 400 K using two different experimental apparatuses at zero applied pressure. Features revealed by the data include a hyperfine contribution due to the Mn nuclei, a T 2 temperature dependence at low temperatures due to the type-II antiferromagnetic magnon contribution, and a sharp but well defined antiferromagnetic transition (T N = 117.7095 K) that is clearly second order in nature. The critical exponent, α, deduced from the transition is consistent with a two dimensional Ising model. The specific heat of MnO is also compared with recent results on the type-A antiferromagnet LaMnO3.

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Carole Rawcliffe, Urban Bodies: Communal Health in Late Medieval English Towns and Cities. Woodbridge: Boydell Press, 2013. xiii + 431pp. 28 illustrations. 4 maps. Bibliography. £60.00.

Equilibrated Surface Alloys and the Influence of Strain

Critical Phenomena at the Antiferromagnetic Transition in MnO

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3 results

Carole Rawcliffe, Urban Bodies: Communal Health in Late Medieval English Towns and Cities. Woodbridge: Boydell Press, 2013. xiii + 431pp. 28 illustrations. 4 maps. Bibliography. £60.00.

Equilibrated Surface Alloys and the Influence of Strain

Critical Phenomena at the Antiferromagnetic Transition in MnO