Here. we report a detailed study of the magnetic, transport, and thermodynamic properties of Ce2Te5 single crystals, a layered $$\mathcal{f}$$-electron van der Waals magnet. Four consecutive transitions at ~5.2, 2.1, 0.9, and 0.4 K were observed in the ac-plane electrical resistivity $$\rho(T)$$, which were further confirmed in specific heat $$C_\text{p}(T)$$ measurements. Analysis of the magnetic susceptibility $$\chi(T)$$, the magnetic-field variation of $$\rho(T)$$, and the increase of the first transition temperature ($$T_c$$ ~ 5.2 K) with applied magnetic field indicates ferromagnetic order, while the decrease of the other transitions with field suggests different states with dominant antiferromagnetic interactions below $$T_2$$ ~ 2.1 K, $$T_3$$ ~ 0.9 K, and $$T_4$$ = 0.4 K. Critical behavior analysis around Tc that gives critical exponents $$\beta$$ = 0.31(2), $$\gamma$$ = 0.99(2), $$\delta$$ = 4.46(1), and $$T_c$$ = 5.32(1) K indicates that Ce2Te5 shows a three-dimensional magnetic critical behavior. Moreover, the Hall resistivity ρxy indicates that Ce2Te5 is a multiband system with a relatively high electron mobility ~2900 cm2 V–1 s–1 near $$T_c$$, providing further opportunities for future device applications.
Liu, Yu, et al. "Physical properties of the layered $\mathcal{f}$-electron van der Waals magnet Ce<sub>2</sub>Te<sub>5</sub>." Physical Review Materials, vol. 6, no. 9, Sep. 2022. https://doi.org/10.1103/physrevmaterials.6.094407
@article{osti_1891839,
author = {Liu, Yu and Bordelon, Mitchell McCarty and Weiland, Ashley Corene and Rosa, Priscila F. S. and Thomas, Sean Michael and Thompson, Joe David and Ronning, Filip and Bauer, Eric Dietzgen},
title = {Physical properties of the layered $\mathcal{f}$-electron van der Waals magnet Ce<sub>2</sub>Te<sub>5</sub>},
annote = {Here. we report a detailed study of the magnetic, transport, and thermodynamic properties of Ce2Te5 single crystals, a layered $\mathcal{f}$-electron van der Waals magnet. Four consecutive transitions at ~5.2, 2.1, 0.9, and 0.4 K were observed in the ac-plane electrical resistivity $\rho(T)$, which were further confirmed in specific heat $C_\text{p}(T)$ measurements. Analysis of the magnetic susceptibility $\chi(T)$, the magnetic-field variation of $\rho(T)$, and the increase of the first transition temperature ($T_c$ ~ 5.2 K) with applied magnetic field indicates ferromagnetic order, while the decrease of the other transitions with field suggests different states with dominant antiferromagnetic interactions below $T_2$ ~ 2.1 K, $T_3$ ~ 0.9 K, and $T_4$ = 0.4 K. Critical behavior analysis around Tc that gives critical exponents $\beta$ = 0.31(2), $\gamma$ = 0.99(2), $\delta$ = 4.46(1), and $T_c$ = 5.32(1) K indicates that Ce2Te5 shows a three-dimensional magnetic critical behavior. Moreover, the Hall resistivity ρxy indicates that Ce2Te5 is a multiband system with a relatively high electron mobility ~2900 cm2 V–1 s–1 near $T_c$, providing further opportunities for future device applications.},
doi = {10.1103/physrevmaterials.6.094407},
url = {https://www.osti.gov/biblio/1891839},
journal = {Physical Review Materials},
issn = {ISSN 2475-9953},
number = {9},
volume = {6},
place = {United States},
publisher = {American Physical Society (APS)},
year = {2022},
month = {09}}
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
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