Antiferromagnetic order in pure<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Ce</mml:mi><mml:msub><mml:mi mathvariant="normal">Fe</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>under pressure

Braithwaite, D.; Lapertot, G.; Salce, B.; Cumberlidge, A.-M.; Alireza, Patricia

doi:10.1103/physrevb.76.224427

Cited by 22 publications

(23 citation statements)

References 15 publications

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“…Figure 1(b) illustrates that with increasing pressure the peak height at T N diminishes nonlinearly (inset to figure 1(b)) and peak itself broadens. A similar observation has been made in CeFe 2 alloys and been interpreted as enhancement of AFM correlations [19]. In the case of ETO this corresponds to an increasing Eu 4f hybridization effect stabilizing the AFM nearest neighbor exchange.…”

Section: Resultssupporting

confidence: 79%

Nonlinear pressure dependence ofT_Nin almost multiferroic EuTiO₃

Guguchia

Caslin

et al. 2013

J. Phys.: Condens. Matter

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The antiferromagnetic (AFM) phase transition temperature T N of EuTiO 3 has been studied as a function of pressure p. The data reveal a nonlinear dependence of T N on p with T N increasing with increasing pressure. The exchange interactions exhibit an analogous dependence on p as T N (if the absolute value of the nearest neighbor interaction is considered) and there is evidence that the AFM transition is robust with increasing pressure. The corresponding Weiss temperature Θ W remains anomalous since it always exhibits positive values. The data are analyzed within the Bloch power law model and provide excellent agreement with experiment.Pacs-Index: 75.50. Ee, 75.30.Kz, 61.50.Ks

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Section: Resultssupporting

confidence: 79%

Nonlinear pressure dependence ofT_Nin almost multiferroic EuTiO₃

Guguchia

Caslin

et al. 2013

J. Phys.: Condens. Matter

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“…The ferromagnetic ground state of CeFe 2 undergoes a phase transition to an antiferromagnet with small amounts of chemical doping on the Fe site by one of many elements including Al, Co, Ru and Ir [15][16][17][18][19][20][21][22] . Previous work on stoichiometric CeFe 2 found evidence for a new phase at high pressure which, by comparison with the doped systems, was suggested to be the antiferromagnetic phase [23][24][25] . The proximity of stoichiometric CeFe 2 to an antiferromagnetic instability is also supported by the observation of antiferromagnetic fluctuations within the ferromagnetic phase 9,10,24 .…”

Section: A Generic Phase Diagram For Cefe2mentioning

confidence: 93%

“…Phase diagrams were collected from the literature for CeFe 2 under pressure (Ref. [22,23,25]), Ce(Fe 1−x Co x ) 2 at both ambient (up to 16%, Ref. [17,22,25]) and high pressure (for 5, 7, and 10%, Ref.…”

Section: A Generic Phase Diagram For Cefe2mentioning

confidence: 99%

“…[22,23,25]), Ce(Fe 1−x Co x ) 2 at both ambient (up to 16%, Ref. [17,22,25]) and high pressure (for 5, 7, and 10%, Ref. [22,25]), Ce(Fe 1−x Al x ) 2 (up to 15%, Ref.…”

Section: A Generic Phase Diagram For Cefe2mentioning

confidence: 99%

“…[17,22,25]) and high pressure (for 5, 7, and 10%, Ref. [22,25]), Ce(Fe 1−x Al x ) 2 (up to 15%, Ref. [16]), Ce(Fe 1−x Ru x ) 2 (up to 15%, Ref.…”

Section: A Generic Phase Diagram For Cefe2mentioning

confidence: 99%

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Pressure tuning of competing magnetic interactions in intermetallic CeFe2

et al. 2012

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We use high-pressure magnetic x-ray diffraction and numerical simulation to determine the lowtemperature magnetic phase diagram of stoichiometric CeFe2. Near 1.5 GPa we find a transition from ferromagnetism to antiferromagnetism, accompanied by a rhombohedral distortion of the cubic Laves crystal lattice. By comparing pressure and chemical substitution we find that the phase transition is controlled by a shift of magnetic frustration from the Ce-Ce to the Fe-Fe sub-lattice. Notably the dominant Ce-Fe magnetic interaction, which sets the temperature scale for the onset of long range order, remains satisfied throughout the phase diagram but does not determine the magnetic ground state. Our results illustrate the complexity of a system with multiple, competing magnetic energy scales and lead to a general model for magnetism in cubic Laves phase intermetallic compounds.

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Hydrostatic and Uniaxial Pressure Tuning of Iron‐Based Superconductors: Insights into Superconductivity, Magnetism, Nematicity, and Collapsed Tetragonal Transitions

Gati

Bud’ko

et al. 2020

Annalen der Physik

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Iron-based superconductors are well-known for their intriguing phase diagrams, which manifest a complex interplay of electronic, magnetic, and structural degrees of freedom. Among the phase transitions observed are superconducting, magnetic, and several types of structural transitions, including a tetragonal-to-orthorhombic and a collapsed-tetragonal transition. In particular, the widely observed tetragonal-to-orthorhombic transition is believed to be a result of an electronic order that is coupled to the crystalline lattice and is, thus, referred to as nematic transition. Nematicity is therefore a prominent feature of these materials, which signals the importance of the coupling of electronic and lattice properties. Correspondingly, these systems are particularly susceptible to tuning via pressure (hydrostatic, uniaxial, or some combination). Efforts to probe the phase diagrams of pressure-tuned iron-based superconductors are reviewed with a strong focus on recent insights into the phase diagrams of several members of this material class under hydrostatic pressure. These studies on FeSe, Ba(Fe 1−x Co x) 2 As 2 , Ca(Fe 1−x Co x) 2 As 2 , and CaK(Fe 1−x Ni x) 4 As 4 are, to a significant extent, made possible by advances of what measurements can be adapted to their use under differing pressure environments. The potential impact of these tools for the study of the wider class of strongly correlated electron systems is pointed out.

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Antiferromagnetic order in pureCeFe2under pressure

Cited by 22 publications

References 15 publications

Nonlinear pressure dependence ofT_Nin almost multiferroic EuTiO₃

Nonlinear pressure dependence ofT_Nin almost multiferroic EuTiO₃

Pressure tuning of competing magnetic interactions in intermetallic CeFe2

Hydrostatic and Uniaxial Pressure Tuning of Iron‐Based Superconductors: Insights into Superconductivity, Magnetism, Nematicity, and Collapsed Tetragonal Transitions

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Antiferromagnetic order in pureCeFe2under pressure

Cited by 22 publications

References 15 publications

Nonlinear pressure dependence ofTNin almost multiferroic EuTiO3

Nonlinear pressure dependence ofTNin almost multiferroic EuTiO3

Pressure tuning of competing magnetic interactions in intermetallic CeFe2

Hydrostatic and Uniaxial Pressure Tuning of Iron‐Based Superconductors: Insights into Superconductivity, Magnetism, Nematicity, and Collapsed Tetragonal Transitions

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Nonlinear pressure dependence ofT_Nin almost multiferroic EuTiO₃

Nonlinear pressure dependence ofT_Nin almost multiferroic EuTiO₃