Magnetic field induced Ising axis conversion in Tb0.5Dy0.5Cu2 single crystals

Loewenhaupt, M.; Doerr, M.; Rotter, Martin; Reif, T.H.; Schneidewind, A.; Hoser, A.

doi:10.1590/s0103-97332000000400022

Cited by 5 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The vectorial superposition of both of their magnetization curves are now similar compared to the magnetization curve of the initial magnetic easy a axis ͑not shown in the figure͒. 17 Because of this, in former publications an exchange of magnetic axes without a microstructural change had been concluded. [2][3][4][5][6][7][8] Ramping down the field and repeating the magnetic field scan afterwards the magnetization jump does not occur anymore.…”

Section: Magnetization and Strainmentioning

confidence: 57%

“…The appearance of new reflections in the ͑ h k1 2 ͒ 0 scattering plane at expected scattering positions and with expected intensities supports the TV model. The converted state has been found to remain when the magnetic field is removed and/or the crystal is heated into the paramagnetic state ͑T N = 38K͒ or even to room temperature 17. Thus one can confirm that the conversion is associated with a microstructural change and is not a phase change.…”

mentioning

confidence: 87%

See 1 more Smart Citation

Magnetic shape memory effect in the paramagnetic state inRCu2(R=rareearth) antiferromagnets

et al. 2006

View full text Add to dashboard Cite

RCu 2 ͑R = rare earth͒ is presented as the first magnetic shape memory ͑MSM͒ alloy with the magnetic anisotropy of rare earth ions as impelling force. Besides La 2−x Sr x CuO 4 RCu 2 is the second known antiferromagnetic MSM-compound system. However, longrange magnetic order is not necessary for the MSM effect here. Microstructural changes are occurring even above the magnetic ordering temperature because the magnetic anisotropy gives a strong effect also in the paramagnetic state. RCu 2 compounds have a pseudohexagonal orthorhombic structure which splits up into three twin variants, each rotated about 60°to the others about the pseudohexagonal axis. To move the twin boundaries, a magnetic field of about 3.2 T and a temperature of typical 30 K is necessary. Moving of twin boundaries results in a typical length change of two percent. Depending on the field direction a certain twin variant is favored. Neutron data from a Tb 0.5 Dy 0.5 Cu 2 single crystal confirm a change of the volume fraction of the three twin variants.

show abstract