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Zj, Huang; Cao, Yu; Sun, Yilin; Xue, Y. Y.; Chu, C. W.

doi:10.1103/physrevb.56.2623

Cited by 499 publications

(248 citation statements)

References 12 publications

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“…∼0.01%. In other words, the contributions from λeQ 2 m terms (equation (9)) are negligibly small and the only detectable change arises from λe 2 Q 2 m terms which lead to variations in elastic constants proportional to Q 2 m (equations (7) and (8)). …”

Section: Low Temperature Behaviourmentioning

confidence: 99%

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Elastic anomalies associated with structural and magnetic phase transitions in single crystal hexagonal YMnO₃

Thomson

Chatterji

Howard

et al. 2014

J. Phys.: Condens. Matter

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Resonant ultrasound spectroscopy has been used to measure the elastic and anelastic behaviour through known structural and magnetic phase transitions in single crystal hexagonal YMnO 3 . Anomalous elastic behaviour is observed at the high temperature structural transition at ∼1260 K, with a discontinuity in the elastic constants and nonlinear recovery below T c , consistent with λeQ 2 s coupling. There is no change in dissipation associated with this high temperature transition, and no evidence in the elastic or anelastic behaviour for any secondary transition at ∼920 K, thus supporting the thesis of a single high temperature transformation. Elastic stiffening is observed on cooling through T N , in accordance with previous studies, and the excess elastic constant appears to scale with the square of the magnetic order parameter. The strains incurred at T N are a factor of ∼20 smaller than those at the structural transition, implying very weak λeQ 2 m coupling and a dominant contribution to the variation in the elastic constants from λe 2 Q 2 m . The increased acoustic dissipation above T N is consistent with an order-disorder process.

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Section: Low Temperature Behaviourmentioning

confidence: 99%

“…Of these materials YMnO 3 , with a layered structure with Y ions placed between sheets of corner sharing MnO 5 triangular bipyramids, has been of particular interest [9][10][11][12][13][14][15][16]. It is ferroelectric (FE) below ∼900-1300 K and antiferromagnetic (AFM) below ∼75 K [15].…”

Section: Introductionmentioning

confidence: 99%

Elastic anomalies associated with structural and magnetic phase transitions in single crystal hexagonal YMnO₃

Thomson

Chatterji

Howard

et al. 2014

J. Phys.: Condens. Matter

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“…YMnO 3 , which develops ferroelectric order at T C~9 00 K and antiferromagnetic order below T N~7 5 K, and is therefore multiferroic below T N , has been the subject of numerous investigations exploring the nature of the magnetoelectric coupling in this class of materials. Early measurements on the temperature dependent dielectric constant of YMnO 3 found clear anomalies associated with the antiferromagnetic transition, pointing to coupling between the ferroelectric and magnetic orders [1]. Optical studies on YMnO 3 also find clear evidence for coupling between the ferroelectric and antiferromagnetic domain walls [3], with measurements on the related compound HoMnO 3 demonstrating control of the magnetic phase using a static electric field [7].…”

Section: Introductionmentioning

confidence: 99%

“…The hexagonal rare earth manganites, RMnO 3 with R=Ho, Er, Tm, Yb, Lu, or Y, have been widely studied because of their magnetoelectric properties [1][2][3][4][5][6]. YMnO 3 , which develops ferroelectric order at T C~9 00 K and antiferromagnetic order below T N~7 5 K, and is therefore multiferroic below T N , has been the subject of numerous investigations exploring the nature of the magnetoelectric coupling in this class of materials.…”

Section: Introductionmentioning

confidence: 99%

Suppression of multiferroic order in hexagonal ceramics

Dixit

Smith

Subramanian

et al. 2010

Solid State Communications

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We have investigated the effects of substituting In for Mn on the antiferromagnetic phase transition in YMnO 3 using magnetic, dielectric, and specific heat measurements. We prepared a set of isostructural phase pure hexagonal YMn 1-x In x O 3 samples having x=0 to x=0.9, which exhibit a systematic decrease of the antiferromagnetic ordering temperature with increasing In content. The multiferroic phase, which develops below T N , appears to be completely suppressed for x≥0.5 in the temperature range investigated, which can be attributed solely to the dilution of magnetic interactions as the crystal structure remains hexagonal. Similar to previous reports, we find an enhancement of the magnetocapacitive coupling on dilution with non-magnetic ions.

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“…Magnetoelectric coupling has been demonstrated by anomalies in the temperature dependence of the dielectric constant at the magnetic ordering temperature. 32,33 The coupling was convincingly shown by Fiebig et al 34 in non-linear optical experiments, which mapped both electric and antiferromagnetic domain walls. Furthermore, Lottermoser et al 35 demonstrated that in HoMnO 3 , ferromagnetic ordering of the Ho-spins could reversibly be switched on and off by using an electric field, again indicating magnetoelectric coupling.…”

Section: Amno 3 Hexagonal Manganitesmentioning

confidence: 61%

Multiferroic Materials: Physics and Properties

Palstra

Blake

2016

Reference Module in Materials Science and Materials Engineering

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Multiferroics are materials in which magnetism and ferroelectricity coexist. They are of fundamental interest to understand electronic behavior coupling magnetic interactions and electric dipolar order. Moreover, they are of applied interest because they allow various types of novel magnetic and electric device structures. We distinguish two important classes of multiferroic materials and discuss mechanisms and materials belonging to each class separately. In the first group of multiferroics, magnetization and polarization arise independently from each other. In the second category of multiferroics, ferroelectricity is induced by magnetic order, resulting in strong magnetoelectric coupling. We also briefly discuss multiferroic thin film heterostructures showing interfacial magnetoelectric coupling interactions with potential applications in memory devices

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Coupling between the ferroelectric and antiferromagnetic orders inYMnO3

Cited by 499 publications

References 12 publications

Elastic anomalies associated with structural and magnetic phase transitions in single crystal hexagonal YMnO₃

Elastic anomalies associated with structural and magnetic phase transitions in single crystal hexagonal YMnO₃

Suppression of multiferroic order in hexagonal ceramics

Multiferroic Materials: Physics and Properties

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Coupling between the ferroelectric and antiferromagnetic orders inYMnO3

Cited by 499 publications

References 12 publications

Elastic anomalies associated with structural and magnetic phase transitions in single crystal hexagonal YMnO3

Elastic anomalies associated with structural and magnetic phase transitions in single crystal hexagonal YMnO3

Suppression of multiferroic order in hexagonal ceramics

Multiferroic Materials: Physics and Properties

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Product

Resources

About

Elastic anomalies associated with structural and magnetic phase transitions in single crystal hexagonal YMnO₃

Elastic anomalies associated with structural and magnetic phase transitions in single crystal hexagonal YMnO₃