Noncollinear magnetism of Cr surface with spatial defects

Yartseva, N.S.; Yartsev, S. V.; Parlebas, J.C.

doi:10.1016/j.susc.2008.09.008

Cited by 5 publications

(2 citation statements)

References 37 publications

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“…This suggests that the as-processed specimen has a larger noncollinear arrangement than the annealed specimen. Noncollinear magnetism depends on the presence of surface defects [43]. Also, a variation in lattice or bond distance induces the unique magnetism of nanosized materials [44,45].…”

Section: Resultsmentioning

confidence: 99%

Surface effects on saturation magnetization in nanoporous Ni

Hakamada

Takahashi

Furukawa

et al. 2010

Philosophical Magazine

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Nanoporous Ni specimens with ligament lengths of 10-210 nm and specific surface areas of 0.03-0.58 nm À1 were fabricated by the dealloying of Ni 0.25 Mn 0.75 alloy and annealing at 473-873 K, and saturation magnetization investigated in terms of their size dependence. Saturation magnetization decreased with decreasing ligament length or increasing specific surface area. This trend is the same as that for nanoparticle Ni. However, the saturation magnetization of nanoporous Ni tends to be lower than that of the nanoparticle Ni when their specific surface areas are the same. It is suggested, therefore, that the surface effect due to a noncollinear arrangement is enhanced by the surface defects in the nanoporous Ni.

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Section: Resultsmentioning

confidence: 99%

Surface effects on saturation magnetization in nanoporous Ni

Hakamada

Takahashi

Furukawa

et al. 2010

Philosophical Magazine

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“…The magnetism of Cr films and Cr(001) surfaces has been widely investigated from the viewpoints of fundamental understanding and application to spin-electronic devices. 1) Various magnetic states of Cr films have been reported, such as spin-density waves, 2) incommensurate antiferromagnetic (AF) ordering, 3) and noncollinear magnetic ordering, 4) which depend on the Cr film thickness (Θ Cr ) and adjacent layer materials. By contrast, the Cr(001) surface exhibits a topological (layered) AF order, in which Cr atoms within a single (001) plane exhibit ferromagnetic order, and the adjacent (001) plane separated by a monatomic step exhibits AF order.…”

Section: Introductionmentioning

confidence: 99%

Growth and surface magnetism of ultrathin Cr(001) films

Kawagoe

2024

Jpn. J. Appl. Phys.

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We investigate the growth of ultrathin Cr films on a Au(001) surface and observed that the growth of 1.5 nm-thick Cr layers at 290 K, followed by post-annealing at 520 K, results in high-quality epitaxial Cr(001) films with atomically flat large terraces and distinct surface states. Subsequently, these optimized growth conditions are successfully applied to the growth of 1 nm- and 3 nm-thick Cr films. Magnetic imaging of 1 and 1.5 nm-thick Cr(001) films prepared under the optimized growth conditions is performed using spin-polarized scanning tunneling microscopy. Distinct magnetic contrasts featuring a topological antiferromagnetic (TAF) order are observed in both films; however, spin frustration originating from the density of screw dislocations for both films shows significant difference. The 1.0 nm thick-Cr film, which exhibits a clear TAF order with the suppression of a large spin-frustrated area, is suitable for application to spin-electronic devices.

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