Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics
Univ. of Tennessee, Knoxville, TN (United States)
Juelich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Juelich GmbH, Garching (Germany); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Institute of Physics, Zagreb (Croatia)
While it is commonly accepted that the disorder induced by magnetic ion doping in quantum magnets usually generates a rugged free-energy landscape resulting in slow or glassy spin dynamics, the disorder/distortion effects associated with nonmagnetic ion sites doping are still illusive. Here, using AC susceptibility measurements, we show that the mixture of Sn/Ti on the nonmagnetic ion sites of pyrochlore Yb2(Ti1-xSnx)2O7 induces an antiferromagnetic ground state despite both parent compounds, Yb2Ti2O7 and Yb2Sn2O7, order ferromagnetically. Local structure studies through neutron total scattering reveals the local distortion in the nonmagnetic ion sites and its strong correlation with the magnetic phase switching. Further, our study demonstrates the local distortion as induced by the nonmagnetic ion site mixture could be a new path to achieve magnetic phase switching, which has been traditionally obtained by external stimuli such as temperature, magnetic field, pressure, strain, light, etc.
@article{osti_2477531,
author = {Zhang, Yuanpeng and Dun, Zhiling and Cai, Yunqi and Xing, Chengkun and Cui, Qi and Muniraju, Naveen Chogondahalli and Zhang, Qiang and Li, Yongqing and Cheng, Jinguang and Zhou, Haidong},
title = {Local distortion driven magnetic phase switching in pyrochlore <mml:math> <mml:mrow> <mml:msub> <mml:mi> Yb </mml:mi> <mml:mn> 2 </mml:mn> </mml:msub> <mml:msub> <mml:mrow> <mml:mo> ( </mml:mo> <mml:msub> <mml:mi> Ti </mml:mi> <mml:mrow> <mml:mn> 1 </mml:mn> <mml:mo> - </mml:mo> <mml:mi> x </mml:mi> </mml:mrow> </mml:msub> <mml:msub> <mml:mi> Sn </mml:mi> <mml:mi> x </mml:mi> </mml:msub> <mml:mo> ) </mml:mo> </mml:mrow> <mml:mn> 2 </mml:mn> </mml:msub> <mml:msub> <mml:mi mathvariant="normal"> O </mml:mi> <mml:mn> 7 </mml:mn> </mml:msub> </mml:mrow> </mml:math>},
annote = {While it is commonly accepted that the disorder induced by magnetic ion doping in quantum magnets usually generates a rugged free-energy landscape resulting in slow or glassy spin dynamics, the disorder/distortion effects associated with nonmagnetic ion sites doping are still illusive. Here, using AC susceptibility measurements, we show that the mixture of Sn/Ti on the nonmagnetic ion sites of pyrochlore Yb2(Ti1-xSnx)2O7 induces an antiferromagnetic ground state despite both parent compounds, Yb2Ti2O7 and Yb2Sn2O7, order ferromagnetically. Local structure studies through neutron total scattering reveals the local distortion in the nonmagnetic ion sites and its strong correlation with the magnetic phase switching. Further, our study demonstrates the local distortion as induced by the nonmagnetic ion site mixture could be a new path to achieve magnetic phase switching, which has been traditionally obtained by external stimuli such as temperature, magnetic field, pressure, strain, light, etc.},
doi = {10.1103/physrevb.109.144407},
url = {https://www.osti.gov/biblio/2477531},
journal = {Physical Review. B},
issn = {ISSN 2469-9950},
number = {14},
volume = {109},
place = {United States},
publisher = {American Physical Society (APS)},
year = {2024},
month = {04}}
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 764https://doi.org/10.1016/j.nima.2014.07.029