Spin-glass behavior in KxRu4-yNiyO8 hollandite materials
Journal article
Vera-Stimpson, L. 2018. Spin-glass behavior in KxRu4-yNiyO8 hollandite materials. Physical Review B (PRB). 98 (17). https://doi.org/10.1103/PhysRevB.98.174429
Authors | Vera-Stimpson, L. |
---|---|
Abstract | We report the synthesis and comprehensive ac and dc susceptibility measurements of KxRu4−yNiyO8 hollandite. The value of the relative frequency shift, δTf , has been determined as 0.025 which is within the range expected for spin-glass systems (0.005–0.06). Additionally, the characteristic flipping time of a single spin flip, τ0, and the dynamical critical exponent, −zv, were determined to have values of 5.82×10−8 s and 6.1(3), respectively from the power law. While the value of τ0 is comparatively very large, −zv is consistent with what is expected for spin-glass systems. Field-cooled hysteresis behavior demonstrates a small increase in the remnant magnetization (at 2 K) on increasing the strength of the cooling field, suggesting that the degree of short-range correlations increases consistent with the formation of larger spin clusters. Thermoremnant magnetization data indicate an exponential-like decay of the magnetization as a function of time with the remnant magnetization remaining nonzero. However, it is clear from these data that multiple components contribute to the decay behavior. Collectively, these data confirm spin-glass character for K0.73(3)Ni1.9(5)Ru2.1(5)O8 and clearly demonstrate that the magnetic behavior of this material is far from simplistic. |
Year | 2018 |
Journal | Physical Review B (PRB) |
Journal citation | 98 (17) |
Publisher | American Physical Society |
Digital Object Identifier (DOI) | https://doi.org/10.1103/PhysRevB.98.174429 |
Publication dates | |
26 Nov 2018 | |
Publication process dates | |
Deposited | 30 Nov 2018 |
Accepted | 30 Oct 2018 |
Accepted author manuscript | |
Output status | Published |
Contributors | Powell, J., Stenning, G., Jura, M. and Arnold, D. |
https://repository.canterbury.ac.uk/item/88xxy/spin-glass-behavior-in-kxru4-yniyo8-hollandite-materials
Download files
63
total views172
total downloads2
views this month3
downloads this month