Bibliographic Details
| Title: |
Low-temperature heat capacity of triangle antiferromagnetic molecular clusters K12[(VO)3(SbW9O33)2]·15H2O and K12[(VO)3(BiW9O33)2]·29H2O |
| Authors: |
Kohama, Yoshimitsu1 ykohama@lanl.gov, Kawaji, Hitoshi1, Atake, Tooru1, Fukaya, Keisuke2, Yamase, Toshihiro2 |
| Source: |
Journal of Solid State Chemistry. Jun2009, Vol. 182 Issue 6, p1468-1472. 5p. |
| Subjects: |
Antiferromagnetism, Low temperatures, Microclusters, Magnetic fields, Numerical calculations, Energy levels (Quantum mechanics), Ion-ion collisions |
| Abstract: |
Abstract: Energy level diagrams have been determined for two molecular clusters, K12[(VO)3(SbW9O33)2]·15H2O and K12[(VO)3(BiW9O33)2]·29H2O, by low-temperature heat capacity measurements down to 85mK under magnetic field strengths up to 9T. Both compounds exhibit a broad heat capacity peak dependent upon the magnetic field, which can be explained by the thermal excitation in the magnetic energy levels. A detailed analysis based on the numerical calculation reveals that the spin–spin interaction between the V4+ ions includes a Dzyaloshinskii–Moriya interaction. [Copyright &y& Elsevier] |
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| Database: |
Engineering Source |
