Structure and magnetic properties of RNi (R=Gd, Tb, Dy, Sm) and R6M1.67Si3 (R=Ce, Gd, Tb; M=Ni, Co) hydrides

Yaropolov, Yu. L.; Андреенко, А.С.; Никитин, С.А.; Agafonov, S. S.; Глазков, В. П.; Verbetsky, V.N.

doi:10.1016/j.jallcom.2011.01.047

Cited by 21 publications

(15 citation statements)

References 20 publications

(26 reference statements)

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“…The black round areas correspond to the open porosities, which may be formed in arc melting processes. The fraction of Co 9 Si impurity was also estimated based on the SEM images to be less than 7%, in good agreement with results from X-ray diffraction. Figure 2 shows the temperature dependence of zero field cooled (ZFC) and field cooled (FC) magnetizations for GdCo 9 Si 2 compound.…”

supporting

confidence: 80%

“…In addition to the stripe domain, there is a zone labeled "A" in which the magnetic domains become very strong. It could be associated to the ferromagnetic impurity phase Co 9 Si.…”

Section: -mentioning

confidence: 99%

“…The refined unit cell parameters for GdCo 9 Si 2 are: a ¼ 7.932(2) Å and c ¼ 6.287(8) Å , respectively. The estimated content of Co 9 Si is about 7 wt. %.…”

mentioning

confidence: 99%

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Magnetic properties and magnetocaloric effects in GdCo9Si2 compound with multiple magnetic phase transitions

Zheng

Zhong

Zhang

et al. 2013

Journal of Applied Physics

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supporting

confidence: 80%

“…In addition to the stripe domain, there is a zone labeled "A" in which the magnetic domains become very strong. It could be associated to the ferromagnetic impurity phase Co 9 Si.…”

Section: -mentioning

confidence: 99%

See 1 more Smart Citation

Magnetic properties and magnetocaloric effects in GdCo9Si2 compound with multiple magnetic phase transitions

Zheng

Zhong

Zhang

et al. 2013

Journal of Applied Physics

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“…The rare earth elements on combining with transition metals show peculiar characteristics like good oxidation resistance and excellent strength [1]. Due to large magnetic moments and magnetocaloric effect (MCE) they also have applications in the fabrication of permanent magnets, magnetostrictive devices, magnetooptical recorders [2] and magnetic refrigeration [3][4][5][6][7][8][9][10]. These are also taken as first choice for the purpose of hydrogen storage materials [11].…”

Section: Introductionmentioning

confidence: 99%

“…A sample of polycrystalline DyNi was prepared by Tripathy et al [13] and its magnetocaloric effects have been studied on varying temperature scale by using powder X-ray diffractogram. Later, the magnetic properties of lanthanides-nickel intermetallic compounds and their relative hydrides have been studied by Yaropolov et al [3,4].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Investigations of Structural Phase Transitions and Magnetic, Electronic and Thermal Properties of DyNi: Under High Pressures and Temperatures

Rana

Verma

2014

ISRN Condensed Matter Physics

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Present work is influenced by the requirement of investigation of rare earth intermetallics due to the nonavailability of theoretical details and least information from experimental results. An attempt has been made to analyse the structural, electronic, magnetic and thermal properties of DyNi using full potential linear augmented plane wave method based on density functional theory. DyNi differs from other members of lanthanides nickelates as in ground state it crystallizes in FeB phase rather than orthorhombic CrB structure. The equilibrium lattice constant, bulk modulus, and pressure derivative of bulk modulus are presented in four polymorphs (FeB, CrB, CsCl and NaCl) of DyNi. At equilibrium the cell volume of DyNi for FeB structure has been calculated as 1098.16 Bohr 3 which is comparable well with the experimental value 1074.75 Bohr 3 . The electronic band structure has been presented for FeB phase. The results for thermal properties, namely, thermal expansion coefficient, Gruneisen parameter, specific heat and Debye temperature at higher pressure and temperatures have been reported. The magnetic moments at equilibrium lattice constants have also been tabulated as the rare earth ions associated with large magnetic moments increase their utility in industrial field for the fabrication of electronic devices due to their magnetocaloric effect used in magnetic refrigeration.

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Spontaneous Topological (Anti)meron Chains in the Domain Walls of Centrosymmetric Rare‐Earth Magnet

Xu,

Wang,

et al. 2024

Adv Funct Materials

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Exploration and manipulation of topological protected magnetic swirls, such as skyrmion, antiskyrmion, meron, and vortex, holds significance for fundamental research and practical applications in high‐density magnetic information storage and spintronics because of their high storage density and low driven current. This study unveils the existence of field‐free spontaneous (anti)meron chains with a topological charge of ±1/2 in the centrosymmetric rare‐earth magnet Tb6Co2.17Si2.5 via in situ real‐space observation. The spin reorientation transition from in‐plane to uniaxial anisotropy contributes to the spontaneous transformation from straight domain walls to topological (anti)meron chains and to stripe domains along the [110] zone axis during in situ cooling. The study further confirms the critical role of the noncollinear magnetic structure of Tb atoms in the formation of topological (anti)meron chains via real‐space observations, first‐principles calculations, and micromagnetic simulations. The spontaneous topological magnetic texture is strongly correlated with the 4f electrons of rare‐earth atoms, enriching and stimulating alternative generation mechanisms of topological spin textures from emerging rare‐earth magnets, and further applications in spintronics.

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Structure and magnetic properties of RNi (R=Gd, Tb, Dy, Sm) and R6M1.67Si3 (R=Ce, Gd, Tb; M=Ni, Co) hydrides

Cited by 21 publications

References 20 publications

Magnetic properties and magnetocaloric effects in GdCo9Si2 compound with multiple magnetic phase transitions

Magnetic properties and magnetocaloric effects in GdCo9Si2 compound with multiple magnetic phase transitions

Theoretical Investigations of Structural Phase Transitions and Magnetic, Electronic and Thermal Properties of DyNi: Under High Pressures and Temperatures

Spontaneous Topological (Anti)meron Chains in the Domain Walls of Centrosymmetric Rare‐Earth Magnet

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