The magnetic susceptibilities of an anti-ferromagnetic single crystal of CuCl2.2H2O

Handel, J. van den; Gijsman, H.M.; Poulis, N.J.

doi:10.1016/s0031-8914(52)80221-6

Cited by 62 publications

(4 citation statements)

References 16 publications

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“…Schmitt et al [160] additionally considered the role of crystal water in CuCl 2 • 2H 2 O as compared to anhydrous CuCl 2 and showed that it leads to a dramatic change in magnetic behaviour. Eriochalcite was known as a 3D antiferromagnet [161,162], which can be explained by the relative orientation of the isolated CuCl 2 O 2 plaquettes. The loss of water leads to a switch of the magnetically active orbital, thereby causing a dramatic change in magnetic properties between both compounds.…”

Section: Tolbachite: a Cycloidal Helimagnet With Field-driven Ferroel...mentioning

confidence: 99%

Quantum magnetism in minerals

Inosov

2018

Advances in Physics

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The discovery of magnetism by the ancient Greeks was enabled by the natural occurrence of lodestone -a magnetized version of the mineral magnetite. Nowadays, natural minerals continue to inspire the search for novel magnetic materials with quantum-critical behaviour or exotic ground states such as spin liquids. The recent surge of interest in magnetic frustration and quantum magnetism was largely encouraged by crystalline structures of natural minerals realizing pyrochlore, kagome, or triangular arrangements of magnetic ions. As a result, names like azurite, jarosite, volborthite, and others, which were barely known beyond the mineralogical community a few decades ago, found their way into cutting-edge research in solid-state physics. In some cases, the structures of natural minerals are too complex to be synthesized artificially in a chemistry lab, especially in single-crystalline form, and there is a growing number of examples demonstrating the potential of natural specimens for experimental investigations in the field of quantum magnetism. On many other occasions, minerals may guide chemists in the synthesis of novel compounds with unusual magnetic properties. The present review attempts to embrace this quickly emerging interdisciplinary field that bridges mineralogy with low-temperature condensed-matter physics and quantum chemistry. PACS: 75.30.-m -intrinsic properties of magnetically ordered materials; 75.10.Jm -models of magnetic ordering, including quantum spin frustration; 91.60.Pn -magnetic properties of minerals.

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Section: Tolbachite: a Cycloidal Helimagnet With Field-driven Ferroel...mentioning

confidence: 99%

Quantum magnetism in minerals

Inosov

2018

Advances in Physics

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“…2 and inset dχ/dT ) in perfect agreement with earlier measurements. 6,7 A Curie-Weiss temperature Θ CW = +5.3 K indicating weak AFM interactions has been evaluated.…”

Section: A Thermodynamic Measurementsmentioning

confidence: 99%

“…The results of susceptibility measurements, density functional and model calculations can be consistently understood from a reorientation of the magnetically active Cu orbital driven by the hydration. Regarding the well known 3D magnetic nature of CuCl 2 •2H 2 O, 6,7 the quasi 1D behavior of the water free compound CuCl 2 is rather surprising: CuCl 2 is a J 1 -J 2 Heisenberg chain model compound with FM nearest neighbor (NN) exchange J 1 and AFM next-nearest neighbor (NNN) exchange J 2 . According to the estimated J 2 /J 1 ∼ −1.5 we predict a helical magnetic order below the observed transition at 24 K. Earlier studies 8,9 that tried to model CuCl 2 as a spin 1/2 chain found considerable deviations from a 1D behavior since in these investigations only NN AFM coupling was considered.…”

Section: Introductionmentioning

confidence: 99%

Crystal-water-induced switching of magnetically active orbitals inCuCl2

Schmitt¹,

Janson²,

Schmidt³

et al. 2009

Phys. Rev. B

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The dehydration of CuCl 2 ·2H 2 O to CuCl 2 leads to a dramatic change in magnetic behavior and ground state. Combining density-functional electronic structure and model calculations with thermodynamical measurements, we reveal the microscopic origin of this unexpected incident-a crystal-water-driven switching of the magnetically active orbitals. This switching results in a fundamental change in the coupling regime from a three-dimensional antiferromagnet to a quasi-one-dimensional behavior. CuCl 2 can be well described as a frustrated J 1 -J 2 Heisenberg chain with ferromagnetic exchange J 1 and J 2 / J 1 ϳ −1.5 for which a helical ground state is predicted.

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“…(5) On comprend que lâ valeur de X,&'"-calcùlée à partir de la relation xA (Tc + 5) = 0,45 soit trop forte, ainsi que Van den Handel, Gijsman et Poulis le font remarquer [9].…”

Section: Acétate Cuivrique Monohydratéunclassified

Déviations à la loi de Curie-Weiss dans les composés cuivriques

1956

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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The magnetic susceptibilities of an anti-ferromagnetic single crystal of CuCl2.2H2O

Cited by 62 publications

References 16 publications

Quantum magnetism in minerals

Quantum magnetism in minerals

Crystal-water-induced switching of magnetically active orbitals inCuCl2

Déviations à la loi de Curie-Weiss dans les composés cuivriques

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