Tuning the magnetic ground state of by Yb valence fluctuations
- Univ. of California, San Diego, La Jolla, CA (United States); Univ. of California, Berkeley, CA (United States)
- Univ. of California, San Diego, La Jolla, CA (United States)
- Univ. of California, San Diego, La Jolla, CA (United States); Central Washington Univ., Ellensburg, WA (United States)
- National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
- Rochester Inst. of Technology, Rochester, NY (United States); Univ. of Maryland, College Park, MD (United States)
- Univ. of California, San Diego, La Jolla, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of California, Santa Cruz, CA (United States)
We characterize the properties of Ce1–x Ybx RhIn5 single crystals with 0 ≤ x ≤ 1 using measurements of powder x-ray diffraction, energy dispersive x-ray spectroscopy, electrical resistivity, magnetic susceptibility, specific heat, x-ray absorption near edge structure (XANES), and neutron diffraction. Here, the Yb valence v Yb , calculated from the magnetic susceptibility and measured using XANES, decreases from 3+ at x = 0 to ~2.1+ at xact = 0.2 , where xact is the measured Yb concentration. A transition from incommensurate to commensurate antiferromagnetism is observed in neutron diffraction measurements along Q = (0.5, 0.5, l) between 0.2 ≤ x act ≤ 0.27; this narrative is supported by specific-heat measurements in which a second robust feature appears at a temperature TI (TI < TN) for the same concentration range. Magnetic susceptibility measurements also reveal features which provide additional evidence of magneticordering. The results of this study suggest that the evolution of the Yb valence plays a critical role in tuning the magnetic ground state of Ce1–x Ybx RhIn5.
- Research Organization:
- Univ. of California, San Diego, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF)
- Grant/Contract Number:
- FG02-04ER46105; DMR0802478; DMR1005568; DMR-1508249
- OSTI ID:
- 1609540
- Alternate ID(s):
- OSTI ID: 1482425
- Journal Information:
- Physical Review B, Vol. 98, Issue 19; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Europium mixed-valence, long-range magnetic order, and dynamic magnetic response in
Electronic structure and -orbital occupancy in Yb-substituted CeCoIn