Spin relaxation and resonant phonon trapping in [Gd-2(fum)(3)(H2O)(4)]center dot 3H(2)O
Orendac, M.1,2; Sedlakova, L.1,2; Cizmar, E.1,2; Orendacova, A.1,2; Feher, A.1,2; Zvyagin, S. A.3; Wosnitza, J.3; Zhu, W. H.4; Wang, Z. M.4; Gao, S.4
Source PublicationPHYSICAL REVIEW B
AbstractResults of ac-susceptibility, specific-heat, magnetization, and electron-spin-resonance studies of a [Gd-2(fum)(3)center dot(H2O)(4)]center dot 3H(2)O (fum=fumarate, C4H2O4) powder samples are reported. The results of these measurements enabled us to identify the studied compound as a three-dimensional S = 7/2 Heisenberg magnet with T-N = 0.19 K and dominant crystal-field anisotropy. The susceptibility studies conducted at audio frequencies and temperatures from 2 to 30 K revealed that the application of static magnetic fields induces a slow spin relaxation. The relaxation is not associated with an anisotropy energy barrier and is explicable assuming resonant phonon trapping. The magnetic field dependence of the relaxation time is consistent with the proposed scenario and suggests that a strong spin-lattice interaction may be the mechanism governing the relaxation properties in the studied system.
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WOS IDWOS:000278555300005
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Document Type期刊论文
Corresponding AuthorOrendac, M.
Affiliation1.Safarik Univ, Fac Sci, Ctr Low Temp Phys, Kosice 04154, Slovakia
2.Inst Expt Phys SAS, Kosice 04154, Slovakia
3.FZ Dresden Rossendorf, Dresden High Magnet Field Lab, Dresden, Germany
4.Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
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GB/T 7714
Orendac, M.,Sedlakova, L.,Cizmar, E.,et al. Spin relaxation and resonant phonon trapping in [Gd-2(fum)(3)(H2O)(4)]center dot 3H(2)O[J]. PHYSICAL REVIEW B,2010,81(21).
APA Orendac, M..,Sedlakova, L..,Cizmar, E..,Orendacova, A..,Feher, A..,...&Gao, S..(2010).Spin relaxation and resonant phonon trapping in [Gd-2(fum)(3)(H2O)(4)]center dot 3H(2)O.PHYSICAL REVIEW B,81(21).
MLA Orendac, M.,et al."Spin relaxation and resonant phonon trapping in [Gd-2(fum)(3)(H2O)(4)]center dot 3H(2)O".PHYSICAL REVIEW B 81.21(2010).
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