Magnetic phase transitions, short-range correlations and spin fluctuations in (Gd1−Y )3Co

Баранов, Н. В.; Yermakov, A. A.; Markin, P.E.; Possokhov, Yu. M.; Michor, H.; Weingartner, B.; Hilscher, G.; Kotur, B.

doi:10.1016/s0925-8388(01)01585-7

Cited by 27 publications

(29 citation statements)

References 16 publications

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“…ate ferrimagnetic-type state (IFIM) to the forced ferromagnetic (FM) state. A similar magnetoresistance upon application of external magnetic field was previously reported for numerous binary rare-earth intermetallic compounds [10,11,27,39,51]. A substantial hysteresis of ∆ρ(H)/ρ(0) vs H curves measured on magnetization and demagnetization persists in a wide magnetic field range below H up C2 .…”

Section: Field Applied Along the A Crystallographic Axissupporting

confidence: 82%

“…Among the rare-earth intermetallic compounds, R 3 T (T = Co, Ni) compounds possess the highest content of rare-earth metal within the binary R − T systems and exhibit a rich variety of physical properties: unconventional superconductivity [7,8], charge density wave [9], giant magnetoresistance effect [10,11], multi-component magnetic structures exhibiting coexistence of commensurate and incommensurate propagation vectors [12,13], field-induced magnetic phase transitions [13][14][15][16] and giant magnetocaloric effect [17][18][19][20]. R 3 T compounds crystallize in a low-symmetry orthorhombic structure of the Fe 3 C type described with the space group P nma [21].…”

Section: Introductionmentioning

confidence: 99%

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Field-induced magnetic phase transitions and metastable states in Tb3Ni

Губкин

Nikitin

et al. 2018

Phys. Rev. B

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Section: Field Applied Along the A Crystallographic Axissupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Field-induced magnetic phase transitions and metastable states in Tb3Ni

Губкин

Nikitin

et al. 2018

Phys. Rev. B

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“…Similar influence of spin fluctuations on MCE has been reported in other intermetallic compounds as well. [5][6][7]23,24 The presence of spin fluctuations in R 3 Co compounds have also been reported independently by Baranov et al 28 and Tripathy et al 5…”

Section: Resultssupporting

confidence: 60%

Large reversible magnetocaloric effect in Er3Co compound

Kumar

Singh

Nayak

et al. 2010

Journal of Applied Physics

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Magnetic and magnetocaloric properties of the intermetallic compound Er 3 Co have been studied. Temperature dependence of magnetization data shows that it exhibits ferromagneticlike bulk magnetic ordering at 14 K. For field changes ͑⌬H͒ of 20 and 50 kOe, the maximum values of isothermal magnetic entropy change are found to be 9 and 17 J/kg K, respectively. For ⌬H = 20 and 50 kOe, the relative cooling powers are found to be 140 and 450 J/kg, respectively. At temperatures above T ord , the spin fluctuations are found to affect the magnetocaloric properties of Er 3 Co.

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“…16 The anomaly was discussed in terms of interactions of the localized cobalt magnetic moments that is in contradiction with the later results of magnetic measurements. 13 A small hump of the specific heat curve around 160 K was also observed but never discussed. 13 The crystal structure was repeatedly reported to be orthorhombic Fe 3 C-type structure (P nma space group) for entire R 3 Co series at all temperatures.…”

mentioning

confidence: 99%

Temperature-driven phase transformation in Y3Co: Neutron scattering and first-principles studies

et al. 2013

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Contrary to previous studies that identified the ground state crystal structure of the entire R 3 Co series (R is a rare earth) as orthorhombic P nma, we show that Y 3 Co undergoes a structural phase transition at T t ≃ 160 K. Single crystal neutron diffraction data reveal that at T t the trigonal prisms formed by a cobalt atom and its six nearest-neighbor yttrium atoms experience distortions accompanied by notable changes of the Y-Co distances. The formation of the low-temperature phase is accompanied by a pronounced lattice distortion and anomalies seen in heat capacity and resistivity measurements. Density functional theory calculations reveal a dynamical instability of the P nma structure of Y 3 Co. In particular, a transversal acoustic phonon mode along the (00ξ) direction has imaginary frequencies at ξ < 1/4. Employing inelastic neutron scattering measurements we find a strong damping of the (00ξ) phonon mode below a critical temperature T t .The observed structural transformation causes the reduction of dimensionality of electronic bands and decreases the electronic density of states at the Fermi level that identifies Y 3 Co as a system with the charge density wave instability.

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Magnetic phase transitions, short-range correlations and spin fluctuations in (Gd1−Y )3Co

Cited by 27 publications

References 16 publications

Field-induced magnetic phase transitions and metastable states in Tb3Ni

Field-induced magnetic phase transitions and metastable states in Tb3Ni

Large reversible magnetocaloric effect in Er3Co compound

Temperature-driven phase transformation in Y3Co: Neutron scattering and first-principles studies

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