Magnetic phase diagram and magnetoelastic coupling of 
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Dey, K.; Sauerland, S.; Werner, J.; Skourski, Y.; Abdel-Hafiez, M.; Bag, Rabindranath; Singh, Surjeet; Klingeler, R.

doi:10.1103/physrevb.101.195122

Cited by 20 publications

(12 citation statements)

References 31 publications

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“…Magnetostriction relates to a lattice deformation of a crystalline solid induced by an applied magnetic field, and is found to be very strong in elementary rare-earth crystals and their alloys, particularly in magnetically ordered compounds (ferro-, antiferromagnets). [1][2][3] The fundamental understanding of magnetostrictive effects boosted the technological application of these materials; from magnetic shielding to actuators, rare-earth compounds are widely used. [4][5][6][7] Despite the robust understanding of magnetostriction in ordered rare-earth compounds, [8] and the growing interest toward rare-earth based paramagnetic compounds that show magnetocaloric [9] and magnetoelectric [10] effects, we know much less about the magnetostrictive response of paramagnetic compounds.…”

Section: Introductionmentioning

confidence: 99%

“…While the magnetostrictive behavior in magnetically ordered compounds can be explained by collective phenomena, [1][2][3] in elementary rare earth compounds and their alloys, the contribution of single-ion spin orbit mechanism plays a key role. [7,8] The single-ion effect or mechanism refers to the complex interaction of magnetic 4f-ions with the surrounding crystal lattice, irrespective of inter-ion exchange interaction or correlation effects.…”

Section: Introductionmentioning

confidence: 99%

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Massive Magnetostriction of the Paramagnetic Insulator KEr(MoO₄)₂via a Single‐Ion Effect

Bernáth

Kutko

Wiedmann

et al. 2021

Adv Elect Materials

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The magnetostriction phenomenon, which exists in almost all magnetically ordered materials, is proved to have wide application potential in precision machinery, microdisplacement control, robotics, and other high‐tech fields. Understanding the microscopic mechanism behind the magnetostrictive properties of magnetically ordered compounds plays an essential role in realizing technological applications and helps the fundamental understanding of magnetism and superconductivity. In paramagnets, however, the magnetostriction is usually significantly smaller because of the magnetic disorder. Here, the observation of a remarkably strong magnetostrictive response of the insulator paramagnet KEr(MoO4)2 is reported on. Using low‐temperature magnetization and dilatometry measurements, in combination with ab initio calculations, employing a quasi‐atomic treatment of many‐body effects, it is demonstrated that the magnetostriction anomaly in KEr(MoO4)2 is driven by a single‐ion effect. This analysis reveals a strong coupling between the Er3+ ions and the crystal lattice due to the peculiar behavior of the magnetic quadrupolar moments of Er3+ ions in the applied field, shedding light on the microscopic mechanism behind the massive magnetostrictive response.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Massive Magnetostriction of the Paramagnetic Insulator KEr(MoO₄)₂via a Single‐Ion Effect

Bernáth

Kutko

Wiedmann

et al. 2021

Adv Elect Materials

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“…5: The angle dependence of the magnetization at B = 1 T obtained by rotating the single crystal in the ab plane at (a) 300 K and at (b) 2 K. An additional asymmetry observed in the magnetic ordered phase is interpreted as a signature of magnetic domains. field magnetization, i.e., M = χB, which is realised for the c axis [14,17] and in general for the paramagnetic region, exploiting the Maxwell relation…”

Section: Discussionmentioning

confidence: 99%

“…In this report, we investigate CoTiO 3 belonging to the ilmenites titanates family (M TiO 3 ; M = Co, Ni, Mn, Fe), which have been studied quite extensively in the recent years due their significant magnetoelectric and magnetoelastic properties [11][12][13][14][15][16]. All the ilmenite titanates crystallize in the rhombohedral R 3 structure with the magnetic M 2+ ions in the basal ab plane arranged in a buckled honeycomb-like structure (see Fig.…”

Section: Introductionmentioning

confidence: 99%

Magnetostriction and magnetostructural domains in CoTiO$_3$

Dey,

Hoffmann,

Klingeler

2021

Preprint

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We report the magnetostrictive length changes of CoTiO3 studied by means of high-resolution dilatometry in magnetic fields (B) up to 15 T. In the long-range antiferromagnetically ordered phase below TN = 38 K, the easy-plane type spin structure undergoes a spin-reorientation transition in the ab plane in magnetic fields B||ab ≈ 2 T. We observe pronounced length changes driven by external magnetic field in this field region indicating significant magnetoelastic coupling in CoTiO3. Specifically, we observe anisotropic deformation of the lattice for fields applied in the ab plane. While, for B 2 T, in-plane magnetostriction shows that the lattice expands (contracts) parallel (perpendicular) to the field direction, the opposite behaviour appear at higher fields. Furthermore, there are remarkable effects of slight changes in the applied uniaxial pressure on the magnetostrictive response of CoTiO3 persisting to temperatures well above TN. The data evidence the presence of magnetic domains below TN as well as of structural ones in CoTiO3. The presence of magnetic domains in the spin ordered phase is further evidenced by an additional 3-fold magnetic anisotropy appearing below TN. We discuss the effects of rotational magnetic domains on isothermal magnetization and magnetostriction and interpret our results on the basis of a multi-domain phenomenological model.

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“…The study of the phenomena arising owing to the interaction between the magnetic and elastic subsys- tems has gained a new impetus recently. This is a consequence of numerous experimental studies [8][9][10][11] carried out with magnetically ordered systems, where the magnetoelastic interaction can be rather strong [10,11]. The results of modern researches, both experimental [11] and theoretical [12], testify to the creation of special conditions for the propagation of oscillations under the influence of the magnetoelastic interaction.…”

Section: Introductionmentioning

confidence: 99%

Damping of Magnetoelastic Waves

Baryakhtar

Danilevich

2020

Ukr. J. Phys.

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A general method for constructing a model of the dissipative function describing the relaxation processes induced by the damping of coupled magnetoacoustic waves in magnetically ordered materials has been developed. The obtained model is based on the symmetry of the magnet and describes both exchange and relativistic interactions in the crystal. The model accounts for the contributions of both the magnetic and elastic subsystems to the dissipation, as well asthe relaxation associated with the magnetoelastic interaction. The dispersion law for coupled magnetoelastic waves is calculated in the case of a uniaxial ferromagnet of the “easy axis” type. It is shown that the contribution of the magnetoelastic interaction to dissipative processes can play a significant role in the case of magnetoacoustic resonance.

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Magnetic phase diagram and magnetoelastic coupling of NiTiO3

Cited by 20 publications

References 31 publications

Massive Magnetostriction of the Paramagnetic Insulator KEr(MoO₄)₂via a Single‐Ion Effect

Massive Magnetostriction of the Paramagnetic Insulator KEr(MoO₄)₂via a Single‐Ion Effect

Magnetostriction and magnetostructural domains in CoTiO$_3$

Damping of Magnetoelastic Waves

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Magnetic phase diagram and magnetoelastic coupling of NiTiO3

Cited by 20 publications

References 31 publications

Massive Magnetostriction of the Paramagnetic Insulator KEr(MoO4)2via a Single‐Ion Effect

Massive Magnetostriction of the Paramagnetic Insulator KEr(MoO4)2via a Single‐Ion Effect

Magnetostriction and magnetostructural domains in CoTiO$_3$

Damping of Magnetoelastic Waves

Contact Info

Product

Resources

About

Massive Magnetostriction of the Paramagnetic Insulator KEr(MoO₄)₂via a Single‐Ion Effect

Massive Magnetostriction of the Paramagnetic Insulator KEr(MoO₄)₂via a Single‐Ion Effect