Magnetic Susceptibility of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Al</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>:<mml:math xmlns:mml="http://www

Smith, Alfred R.; Arnold, Donald J.; Mires, Raymond W.

doi:10.1103/physrevb.2.2323

Cited by 14 publications

(6 citation statements)

References 23 publications

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“…For this purpose the magnetic susceptibility w(T) ¼ M/H of Al 2 O 3 was determined from the linear behaviour of the magnetization M(H) above the saturation field for Fe films deposited on Al 2 O 3 . w(T) smoothly decreases between À 16.27 (T ¼ 10 K) and À 16.87 (TZ150 K) and is in good agreement with data reported by Smith et al 50 …”

Section: Discussionsupporting

confidence: 81%

Large topological Hall effect in the non-collinear phase of an antiferromagnet

et al. 2014

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Non-trivial spin arrangements in magnetic materials give rise to the topological Hall effect observed in compounds with a non-centrosymmetric cubic structure hosting a skyrmion lattice, in double-exchange ferromagnets and magnetically frustrated systems. The topological Hall effect has been proposed to appear also in presence of non-coplanar spin configurations and thus might occur in an antiferromagnetic material with a highly noncollinear and non-coplanar spin structure. Particularly interesting is a material where the non-collinearity develops not immediately at the onset of antiferromagnetic order but deep in the antiferromagnetic phase. This unusual situation arises in non-cubic antiferromagnetic Mn 5 Si 3 . Here we show that a large topological Hall effect develops well below the Néel temperature as soon as the spin arrangement changes from collinear to non-collinear with decreasing temperature. We further demonstrate that the effect is not observed when the material is turned ferromagnetic by carbon doping without changing its crystal structure.

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Section: Discussionsupporting

confidence: 81%

Large topological Hall effect in the non-collinear phase of an antiferromagnet

et al. 2014

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“…3 A key point is that the paramagnetic Ti 3ϩ contributions to the susceptibilities are 80 to 100 times smaller than what had been found for V 3ϩ :Al 2 O 3 16 and for other systems upon which susceptibilities have been measured. 3 A key point is that the paramagnetic Ti 3ϩ contributions to the susceptibilities are 80 to 100 times smaller than what had been found for V 3ϩ :Al 2 O 3 16 and for other systems upon which susceptibilities have been measured.…”

Section: Discussionmentioning

confidence: 87%

“…3 When this term is treated properly, the temperature dependence is understood and the uncertainties in the susceptibility constants are reduced dramatically. It was a lack of proper analysis of this term that led to the inconsistencies in the Van Vleck susceptibilities in the previous analysis.…”

Section: Discussionmentioning

confidence: 99%

“…3 The analysis of the data proceeded as follows: using the ESR value for g ʈ 0 and g Ќ 0 , the data from 4.12 to 10 K were analyzed to determine N, the concentration of Ti 3ϩ singles, and to determine ЌVV 0 Ϫ ʈ C . The isotropic term C/T, arising from impurities, was found 3 to be 0.641ϫ10 Ϫ6 emu K, and this value is used in the current analysis.…”

Section: Discussionmentioning

confidence: 99%

“…͑1͒ and does not take into account the suppression of singles at low temperatures. The uncertainties and anomalies in the earlier analysis 3 have been removed and properly accounted for, but with a smaller spin-orbit coupling constant than had been anticipated. ͑1͒ with Eqs.…”

Section: Discussionmentioning

confidence: 99%

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The dynamic Jahn–Teller effect applied to the temperature-dependent paramagnetic susceptibilities of Ti3+:Al2O3

Quade

Mires

Brumage³

et al. 2003

The Journal of Chemical Physics

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The dynamic Jahn-Teller effect has been used in the analysis of the temperature-dependent paramagnetic susceptibilities of Ti 3ϩ :Al 2 O 3 . Two important changes have been made from the original analysis: ͑1͒ Parameters as determined from the dynamic Jahn-Teller effect are incorporated, and ͑2͒ All Van Vleck susceptibilities have been forced to sum to zero as required by quantum theory. The results of the analysis show that ʈ contains a constant term of the order 1.22ϫ10 Ϫ8 emu/g that does not arise from Ti 3ϩ singles. The data over the temperature range 18 to 100 K indicate that g ʈ 1 ϭ2.54, a value 25% larger than that determined from the infrared Zeeman effect. It is possible to determine the perpendicular Van Vleck susceptibility for the ground state which is governed by the magnetic interaction of the lowest two energy levels with a substantial Jahn-Teller contribution. Finally, the suppression of the susceptibilities below 4.12 K can be modeled by a factor for the removal of singles from the susceptibilities by interactions with nearest neighbors, next-nearest neighbors, etc.

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Jahn‐Teller Manifestation in an Orbital Triplet Coupled to E _g and T_2g Modes

Bhattacharyya

1973

Physica Status Solidi (b)

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Magnetic Susceptibility ofAl2O3:
Alfred R. Smith
¹
,
Donald J. Arnold
²
,
Raymond W. Mires
³

Cited by 14 publications

References 23 publications

Large topological Hall effect in the non-collinear phase of an antiferromagnet

Large topological Hall effect in the non-collinear phase of an antiferromagnet

The dynamic Jahn–Teller effect applied to the temperature-dependent paramagnetic susceptibilities of Ti3+:Al2O3

Jahn‐Teller Manifestation in an Orbital Triplet Coupled to E _g and T_2g Modes

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Magnetic Susceptibility ofAl2O3:Alfred R. Smith1, Donald J. Arnold2, Raymond W. Mires3

Cited by 14 publications

References 23 publications

Large topological Hall effect in the non-collinear phase of an antiferromagnet

Large topological Hall effect in the non-collinear phase of an antiferromagnet

The dynamic Jahn–Teller effect applied to the temperature-dependent paramagnetic susceptibilities of Ti3+:Al2O3

Jahn‐Teller Manifestation in an Orbital Triplet Coupled to E g and T2g Modes

Contact Info

Product

Resources

About

Magnetic Susceptibility ofAl2O3:
Alfred R. Smith
¹
,
Donald J. Arnold
²
,
Raymond W. Mires
³

Jahn‐Teller Manifestation in an Orbital Triplet Coupled to E _g and T_2g Modes