Magnetic and transport properties of Ho/Zr multilayers

Raquet, B.; Sdaq, A.; Broto, J. M.; Rakoto, H.; Ousset, J.C.; Askénazy, S.; Baudry, A.; Boyer, P.; Luche, M.C.; Khmou, A.

doi:10.1016/0921-4526(94)01053-4

Cited by 8 publications

(4 citation statements)

References 4 publications

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“…Finally, let us mention as additional support for the notion of the existence of magnetic interactions between Ho blocks the oscillation of magnetoresistance measured under high magnetic field (5 T) in the same set of Ho30-Zrx multilayers [11]. It is of interest also to see that no significant oscillations characteristic of RE interlayer coupling was observed in other RE-Zr systems such as Dy-Zr [12] or Tm-Zr [8] multilayers.…”

Section: Magnetization Measurementsmentioning

confidence: 63%

“…It is worth noting that the existence of a magnetic interlayer coupling across the nonmagnetic spacer has been briefly mentioned for Ho-Zr multilayers which do not offer coherent epitaxial conditions owing to the large lattice misfit between Ho and Zr [11]. We go back to this point in more detail later on.…”

Section: Introductionmentioning

confidence: 87%

“…Let us mention that some of the data reported here are extracted from an unpublished PhD dissertation by M C Luche [17]. In addition, we shall refer later on to the results of magnetization and magnetoresistance measurements performed in high pulsed magnetic fields which have been the object of a brief report in a conference proceedings [11].…”

Section: Introductionmentioning

confidence: 99%

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Structure and magnetic behaviour of holmium-zirconium multilayers

Baudry

Boyer

Brunel³

et al. 2000

J. Phys.: Condens. Matter

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Ho films of thickness varying from 100 Å up to 4000 Å and [Ho(x Å) - Zr(y Å)]n multilayers with 7 x , y 30 were grown by evaporation under ultravacuum conditions on an oxidized Si(100) substrate covered with a Zr buffer layer. The x-ray diffraction patterns recorded for the transferred momentum either along the -axis or in the basal plane of the hexagonal close-packed structure show that holmium suffers a permanent in-plane compression in films thinner than 200 Å and Ho(x Å ) - Zr(30 Å) multilayers with x 30. Low-temperature magnetization measurements indicate that the magnetic behaviour of Ho is strongly modified by epitaxial strains. The data are consistent with an enhancement of in-plane ferromagnetic order inside the Ho blocks in the Ho-Zr multilayers. A periodic dependence of the squareness of the hysteresis loop on the thickness of the Zr layers is observed in Ho(30 Å) - Zr(x Å) multilayers, which gives evidence for the existence of interlayer magnetic coupling. The out-of-plane magnetic anisotropy generated by Ho - Zr interfaces in a series of Ho(x Å) - Zr(30 Å) multilayers is found to be strong enough to compensate the in-plane anisotropy as the thickness of the Ho layers is decreased to about three monolayers. The variation of the anisotropy against the Ho layer thickness is satisfactorily reproduced with a rough crystal-field model using the point-charge approximation.

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Section: Magnetization Measurementsmentioning

confidence: 63%

Section: Introductionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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Structure and magnetic behaviour of holmium-zirconium multilayers

Baudry

Boyer

Brunel³

et al. 2000

J. Phys.: Condens. Matter

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“…Raquet et al [6] have studied the magnetic and transport properties in high magnetic field of holmium/zirconium multilayers. They found that there is a sharp magnetic transition because of the closing of the conical or helical configurations as in bulk material.…”

Section: Introductionmentioning

confidence: 99%