The magnetic properties of erbium vanadate

Abstract

ErVO4, erbium vanadate, is a tetragonal paramagnet which is known to order magnetically below about 0.4 K. The nature of the ordered structure is predicted from earlier measurements on other vanadates containing neighbouring lanthanide ions. The effects of applied magnetic fields are also discussed.

Thermodynamic properties of quadrupolar states in the frustrated pyrochlore magnet Tb2Ti2O7

“…Since the coefficient B is written to be B = R(1.25α ′2 + P 2 ) using the magnetic hyperfine constant α ′ , quadrupole coupling constant P , and gas constant R [36], it is roughly estimated that α ′ ∼ 0.037 K when P = 0 or P ∼ 0.041 K when α ′ = 0 (or then α ′ and P are expected within half values of those). These values are the same order of the values for systems including Tb nuclei and the theoretical expectation for the case of the Tb metal [39,40]. We thus considered that the estimation of C N is approximately reasonable and intended to focus on the data above 0.15 K at present for the evaluation of the entropy, which was calculated from the integration of ∆C/T = (…”

Structure, Dynamics, and Computational Studies of Lanthanide‐Based Contrast Agents

“…Equation (5.4) can, alternatively, be expressed in the laboratory frame using the five components of the magnetic susceptibility tensor [100]. Bleaney has calculated PCSs with the assumption that the ligand field splittings for the lowest J state in the Ln 3+ complexes are small compared to kT [101]. If the principal magnetic axes system is used, Equation (5.4) can be written as Equation (5.7) or (5.8).…”

“…References[101,103] with values scaled to −100 for Dy. c References[116,117]; when zero-field splitting (ZFS) effects are included in the processing of the data, the values are three times as large.…”

The lanthanide ions as structural probes in biological and model systems

“…However, the conclusion was reached that reasonable good T -1 plots may be expected for A x (and thus AvoiP/vo) "over the limited temperature range available to dipolar shift experiments, but that such plots will not in general pass through the origin". This conclusion is consistent with the bulk of the empirical data, and is in contrast to the T -z dependence predicted by Bleaney (124,125). The predominantly dipolar nature of proton resonance shifts in the fl-diketonate systems has been convincingly established by comparing the signs and magnitudes of shifts with those expected from single crystal magnetic anisotropy measurements made on Ln(thd) 3.…”