Magnetic ordering in RPtIn ( and Ho) ternary intermetallics

Baran, S.; Gondek, Ł.; Hernández–Velasco, J.; Kaczorowski, D.; Szytuła, A.

doi:10.1016/j.jmmm.2006.01.001

Cited by 3 publications

(6 citation statements)

References 25 publications

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“…In HoPtIn, the AFM component disappears with increasing temperature and remains FM up to the ferroparamagnetic transition [416]. The magnetization data show that both compounds show TMI [416]. The neutron diffraction in TbPtIn shows an AFM structure described by wave vector It has been observed that CePtSi shows heavy fermion, which does not show any magnetic ordering down to 70 mK and has enhanced γ=800 mJ/mol K 2 , which also confirms the Kondo behavior of this compound [420].…”

Section: Rptx Compoundssupporting

confidence: 59%

Section: Rptx Compoundsmentioning

confidence: 90%

“…The neutron diffraction data reveal that DyPtIn and HoPtIn compounds show FM component parallel to c axis and an AFM one in the ab plane at 2 K [416]. In HoPtIn, the AFM component disappears with increasing temperature and remains FM up to the ferroparamagnetic transition [416].…”

Section: Rptx Compoundsmentioning

confidence: 91%

Section: Rptx Compoundsmentioning

confidence: 93%

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Review on magnetic and related properties of RTX compounds

Gupta

Суреш

2015

Journal of Alloys and Compounds

262

124

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RTX (R=rare earths, T= 3d/4d/5d, transition metals such as Sc, Ti, Mn, Fe, Co, Ni, Cu, Ru, Rh, Pd, Ag, Os, Ir, Pt, Au, and X=p-block elements such as Al, Ga, In, Si, Ge, Sn, As, Sb, Bi) series is a huge family of intermetallics compounds. These compounds crystallize in different crystal structures depending on the constituents. Though these compounds have been known for a long time, they came to limelight recently in view of the large magnetocaloric effect (MCE) and magnetoresistance (MR) shown by many of them. Most of these compounds crystallize in hexagonal and tetragonal crystal structures. Some of them show crystal structure modification with annealing temperature; while a few of them show iso-structural transition in the paramagnetic regime. Their magnetic ordering temperatures vary from very low temperatures to temperatures well above room temperature (~510 K). Depending on the crystal structure, they show a variety of magnetic and electrical properties.These compounds have been characterized by means of a variety of techniques/measurements such as x-ray diffraction, neutron diffraction, magnetic properties, heat capacity, magnetocaloric properties, electrical resistivity, magnetoresistance, thermoelectric power, thermal expansion, Hall effect, optical properties, XPS, Mössbauer spectroscopy, ESR, μSR, NMR, NQR etc. Some amount of work on theoretical calculations on electronic structure, crystal field interaction and exchange interactions has also been reported. The interesting aspect of this series is that they show a variety of physical properties such as Kondo effect, heavy fermion behavior, spin glass state, intermediate valence, superconductivity, multiple magnetic transitions, metamagnetism, large MCE, large positive as well as negative MR, spin orbital compensation, magnetic polaronic behavior, pseudo gap effect etc.Except Mn, no other transition metal in these compounds possesses considerable magnetic moments.Because of this RMnX compounds in general have high ordering temperatures. Interstitial modification using hydrogen and nitrogen is found to alter their crystal structures and magnetic properties considerably. RTX compounds also show interesting pressure effects on their structural and magnetic properties. In summary, these compounds show variety of physical properties over a wide range of temperatures. This review is intended to cover all the important results obtained in this family, particularly in the last few years.

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Section: Rptx Compoundssupporting

confidence: 59%

Section: Rptx Compoundsmentioning

confidence: 90%

Section: Rptx Compoundsmentioning

confidence: 91%

Section: Rptx Compoundsmentioning

confidence: 93%

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Review on magnetic and related properties of RTX compounds

Gupta

Суреш

2015

Journal of Alloys and Compounds

262

124

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“…Many compounds of the RE-M-Tr type have been synthesized, where M ) Fe, Ni, or Co, with often the same outcome that the transition metal is reduced and its magnetic moment quenched consequently becoming diamagnetic. 24,[26][27][28][29][30] Density functional theory calculations on these types of compounds have shown that the transition metal 3d band lies well below the Fermi level and is filled (i.e., 3d 10 ) and diamagnetic. [31][32][33][34] In addition, for p-metal rich compounds, the extensive interaction between the d-orbitals of transition metals and p-orbitals of trielides and tetrelides works to increase the separation between bonding and antibonding energy bands and deplete electron density at the Fermi level.…”

Section: Introductionmentioning

confidence: 99%

Development and Loss of Ferromagnetism Controlled by the Interplay of Ge Concentration and Mn Vacancies in Structurally Modulated Y₄Mn_1−xGa_12−yGe_y

et al. 2010

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The cubic intermetallic phase Y(4)Mn(1-x)Ga(12-y)Ge(y) (x = 0-0.26, y = 0-4.0) has been isolated from a molten gallium flux reaction. It presents a rare example of a system where ferromagnetism can be induced by controlling the vacancies of the magnetic centers. The Y(4)PdGa(12) type crystal structure is made up of a corner-sharing octahedral network of Ga and Ge atoms with Mn atoms at the centers of half the octahedra and Y atoms in the voids. At the highest Ge concentration, y = 4.0, the Mn site is nearly fully occupied, x = 0.05, and the samples are paramagnetic. At a lower Ge concentration, y = 1.0, Mn deficiency develops with x = 0.10. Surprisingly, strong ferromagnetism is observed with T(c) = 223 K. When Ge is excluded, y = 0, Mn is substantially deficient at x = 0.26 and ferromagnetism is maintained with a T(c) of approximately 160 K. In addition, a 6-fold modulated superstructure appears owing to an ordered slab-like segregation of Mn atoms and vacancies. Corresponding bond distortions propagate throughout the octahedral Ga network. Structure-property relationships are examined with X-ray and neutron diffraction, magnetic susceptibility, and electrical resistivity measurements.

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