Heat Capacity of Cr<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Br</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>from 14 to 360°K

Jennings, L. D.; Hansen, Wilford N.

doi:10.1103/physrev.139.a1694

Cited by 38 publications

(13 citation statements)

References 16 publications

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“…This is a small fraction of the expected value of Rln(2S+1) = 11.5 J K −1 mol-Cr −1 , and suggests that most of the magnetic entropy is released as magnetic correlations develop well above the onset of long range order. This is consistent with previous observations for isostructural CrBr 3 and CrI 3 [18,49].…”

Section: B Magnetic Behavior and Phase Transitionssupporting

confidence: 94%

Magnetic behavior and spin-lattice coupling in cleavable van der Waals layered CrCl3 crystals

McGuire

Clark

et al. 2017

Phys. Rev. Materials

252

155

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CrCl3 is a layered insulator that undergoes a crystallographic phase transition below room temperature and orders antiferromagnetically at low temperature. Weak van der Waals bonding between the layers and ferromagnetic in-plane magnetic order make it a promising material for obtaining atomically thin magnets and creating van der Waals heterostructures. In this work we have grown crystals of CrCl3, revisited the structural and thermodynamic properties of the bulk material, and explored mechanical exfoliation of the crystals. We find two distinct anomalies in the heat capacity at 14 and 17 K confirming that the magnetic order develops in two stages on cooling, with ferromagnetic correlations forming before long range antiferromagnetic order develops between them. This scenario is supported by magnetization data. A magnetic phase diagram is constructed from the heat capacity and magnetization results. We also find an anomaly in the magnetic susceptibility at the crystallographic phase transition, indicating some coupling between the magnetism and the lattice. First principles calculations accounting for van der Waals interactions also indicate spin-lattice coupling, and find multiple nearly degenerate crystallographic and magnetic structures consistent with the experimental observations. Finally, we demonstrate that monolayer and few-layer CrCl3 specimens can be produced from the bulk crystals by exfoliation, providing a path for the study of heterostructures and magnetism in ultrathin crystals down to the monolayer limit.

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Section: B Magnetic Behavior and Phase Transitionssupporting

confidence: 94%

Magnetic behavior and spin-lattice coupling in cleavable van der Waals layered CrCl3 crystals

McGuire

Clark

et al. 2017

Phys. Rev. Materials

252

155

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“…According to the metastable ion transitions (see 2. 6 These reactions could not be confirmed by metastable peaks. The first reaction did not show a metastable transition while the detection of a metastable transition corresponding to the second reaction was not possible by the method of Jennings since mJm2 > 2.…”

Section: (23) Hexaethyl Digermaniummentioning

confidence: 97%

On the mass spectra of some alkyl digermanium compounds

Ridder

Dijikstra

1968

Org. Mass Spectrom.

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This paper reports the monoisotopic mass spectra of the compounds (CH3),Ge-Ge(CH3),, (C2H,),Ge-Ge(C,H,), and (CHs),Ge-Ge(C2H6),. With the aid of metastable ion transitions and appearance potentials the fragmentation patterns can be given.The dominant reactions are explained in terms of the valency of the metal atom. According to the valence rule the possibility of forming an ion in which two germanium atoms are bonded to five other groups (alkyl or hydrogen) determines greatly the spectra, while successive elimination of the methyl groups appears to be difficult and elimination of the ethyl groups is a predominant process.

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“…17 heat capacity data for the hexagonal ferromagnet CrBr 3 from Ref. [27] on a T 2 scale. Since these data have not the highest precision, we have indicated the curvature which results if these data are plotted on a T 3 or a T 3/2 scale in order to demonstrate that the exponents ¼ 3 and ¼ 3 2 can be excluded.…”

Section: Article In Pressmentioning

confidence: 99%