%0 Journal Article %1 PhysRevMaterials.5.073401 %A Selter, S. %A Shemerliuk, Y. %A Sturza, M.-I. %A Wolter, A. U. B. %A Büchner, B. %A Aswartham, S. %D 2021 %I American Physical Society %J Phys. Rev. Mater. %K b %N 7 %P 073401 %R 10.1103/PhysRevMaterials.5.073401 %T Crystal growth and anisotropic magnetic properties of quasi-two-dimensional (Fe$_1-x$Nix)$_2$P$_2$S$_2$ %U https://link.aps.org/doi/10.1103/PhysRevMaterials.5.073401 %V 5 %X We report the crystal growth by chemical vapor transport together with a thorough structural and magnetic characterization of the quasi-2D magnets (Fe1−xNix )2P2S6 with xNi = 0, 0.3, 0.5, 0.7, 0.9, and 1. As-grown crystals exhibit a layered morphology with weak van der Waals interactions between layers parallel to the crystallographic ab plane of the monoclinic structure in the space group C2/m (No. 12). Magnetization measurements reveal an antiferromagnetic ground state for all grown crystals. In the ordered state, the magnetization along different crystallographic directions is in agreement with an Ising anisotropy for 0 ≤ x ≤ 0.9 and only for Ni2P2S6 a different behavior is observed which is in line with an anisotropic Heisenberg or XXZ model description. This striking abrupt change of anisotropy at a critical Ni concentration is coupled to a change in the width of the maximum in the magnetization around Tmax. Furthermore, all intermediate compounds 0 < x ≤ 0.9 exhibit an anisotropic magnetization already in the paramagnetic state similar to the parent compound Fe2P2S6.

@article{PhysRevMaterials.5.073401, abstract = {We report the crystal growth by chemical vapor transport together with a thorough structural and magnetic characterization of the quasi-2D magnets (Fe1−xNix )2P2S6 with xNi = 0, 0.3, 0.5, 0.7, 0.9, and 1. As-grown crystals exhibit a layered morphology with weak van der Waals interactions between layers parallel to the crystallographic ab plane of the monoclinic structure in the space group C2/m (No. 12). Magnetization measurements reveal an antiferromagnetic ground state for all grown crystals. In the ordered state, the magnetization along different crystallographic directions is in agreement with an Ising anisotropy for 0 ≤ x ≤ 0.9 and only for Ni2P2S6 a different behavior is observed which is in line with an anisotropic Heisenberg or XXZ model description. This striking abrupt change of anisotropy at a critical Ni concentration is coupled to a change in the width of the maximum in the magnetization around Tmax. Furthermore, all intermediate compounds 0 < x ≤ 0.9 exhibit an anisotropic magnetization already in the paramagnetic state similar to the parent compound Fe2P2S6.}, added-at = {2023-06-07T15:07:19.000+0200}, author = {Selter, S. and Shemerliuk, Y. and Sturza, M.-I. and Wolter, A. U. B. and Büchner, B. and Aswartham, S.}, biburl = {https://www.bibsonomy.org/bibtex/22eaba16e419aa4dfa5faf56ecff4b0fe/ctqmat}, day = 22, description = {Crystal growth and anisotropic magnetic properties of quasi-two-dimensional (Fe1−xNix)2P2S6}, doi = {10.1103/PhysRevMaterials.5.073401}, interhash = {265356758811ee8d2c527866a8f0e617}, intrahash = {2eaba16e419aa4dfa5faf56ecff4b0fe}, journal = {Phys. Rev. Mater.}, keywords = {b}, month = {07}, number = 7, numpages = {12}, pages = 073401, publisher = {American Physical Society}, timestamp = {2023-10-19T09:53:37.000+0200}, title = {Crystal growth and anisotropic magnetic properties of quasi-two-dimensional (Fe$_{\mathbf{1-x}}$Nix)$_{\mathbf{2}}$P$_{\mathbf{2}}$S$_{\mathbf{2}}$}, url = {https://link.aps.org/doi/10.1103/PhysRevMaterials.5.073401}, volume = 5, year = 2021 }