Crystal structure and magnetic properties of Lu2Co17−xSix single crystals

Терешина, Е.А.; Андреев, А.В.

doi:10.1016/j.intermet.2009.10.020

Cited by 14 publications

(7 citation statements)

References 25 publications

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“…The magnetocrystalline anisotropy at such high temperatures is very small and it is difficult to distinguish details of the spin reorientation. Nevertheless, a careful single-crystal study of the analogous compound Lu 2 Co 17 showed that the spin reorientation occurs as two second-order phase transitions -from the "easy plane" to the "easy cone" at T sr1 = 670 K and from the "easy cone" to the "easy axis" at T sr2 = 730 K [23]. The anomaly (maximum) in the ac or dc susceptibility is closer to the latter Fig.…”

Section: Y 2 Co 17-x Ru X Systemmentioning

confidence: 92%

Influence of Ru on magnetic properties of Y2T17 (T = Fe, Co) and Y2Fe16Si single crystals

Андреев

Терешина

Gorbunov

et al. 2015

Journal of Alloys and Compounds

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Section: Y 2 Co 17-x Ru X Systemmentioning

confidence: 92%

Influence of Ru on magnetic properties of Y2T17 (T = Fe, Co) and Y2Fe16Si single crystals

Андреев

Терешина

Gorbunov

et al. 2015

Journal of Alloys and Compounds

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“…In some of the investigated alloys additional anomalies were observed in the thermomagnetic curves, but without neutron diffraction or Mössbauer effect experiments one cannot give a reasonable explanation. Some indication is provided by experiments on the Lu 2 Co 17-x Si x system [24], for which the authors suggest the presence of two secondorder spin reorientation phase transitions.…”

Section: B Magnetic Propertiesmentioning

confidence: 99%

Magnetic properties of Tm2Fe17-xSix alloys

Bardyn¹,

Belan²,

Gladyshevskii³

et al. 2010

Chem. Met. Alloys

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The cell parameters and magnetic properties of alloys with approximate composition Tm 2 Fe 17-x Si x and various Tm:(Fe+Si) ratios are reported. All the investigated compounds were found to crystallize in the hexagonal Th 2 Ni 17 type. The magnetic properties of polycrystalline samples were investigated in the temperature range 1.9-1100 K in various magnetic fields. The field dependence of the magnetization was studied at T = 4.2 and 77 K in a steady magnetic field up to 14 T, and additionally in a pulsed magnetic field up to 36 T at T = 4.2 K with a pulse duration of 10 ms. The temperature dependence of the magnetization of the alloys exhibits pronounced maxima located at various temperatures, most probably related to spin reorientation and other magnetic anomalies. These anomalies seem to indicate also ferrimagnetic character of the magnetic order, resulting from opposite directions of the magnetic moments of Fe and Tm in the investigated compounds. Additional confirmation of this supposition is the lack of substantial difference between ZFC (zero-field cooled) and FC (field cooled) runs, and the absence of full saturation of magnetization, even under the highest magnetic field. The Néel (Curie) temperatures determined from the dM/dT plots amount to 383 K for x = 0 and 466 K for x = 3. For the saturation magnetic moment in a magnetic field of about 35 T at T = 4.2 K the opposite tendency is observed. The highest value was determined for pristine Tm 2.1 Fe 17.9 (M s = 35.2 µ B) and the lowest value for Tm 2.1 Fe 14.9 Si 3. Ternary rare-earth silicides / Magnetic properties / Magnetic phase transitions / High-magnetic field measurements

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“…The ordered moment averaged over the four inequivalent Co sites, as obtained from the saturation value of the magnetization, is μ Co compound orders at T C = 1210 K and exhibits a spontaneous magnetic moment at 5 K of 27.6 μ B per formula unit (1.6 μ B per Co atom). A spin reorientation from easy-plane to easy-axis type of magnetic anisotropy is observed at 740 K [5]. Lu 2 Ni 17 has a T C of about 600 K and a Ni moment of 0.27 μ B , suggesting that almost all Lu valence electrons are transferred to the Ni 3d band [6].…”

Section: Introductionmentioning

confidence: 95%

Structural investigation ofNp2Co17and analogue compounds under pressure

et al. 2014

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The structural behavior of Np 2 Co 17 is investigated by means of high-pressure diamond-anvil compression measurements and is compared with that of the isostructural compounds Lu 2 Co 17 and Lu 2 Ni 17 . The Th 2 Ni 17 -type hexagonal crystal structure is preserved with no measurable discontinuous volume collapses up to the highest achieved pressure, p = 43 GPa. For Np 2 Co 17 , fits to the Birch-Murnaghan and Vinet equations of state give values of the isothermal bulk modulus and its pressure derivative of B 0 = 286 GPa and B 0 = 3, revealing that this Np compound is a highly incompressible solid with stiffness comparable to that of superhard covalently bonded materials. For the Lu 2 T 17 (T = Co, Ni) compounds, the measured bulk modulus changes from B 0 = 137 GPa for T = Co to B 0 = 257 GPa for T = Ni. The isothermal equation of state for the studied compounds are in excellent agreement with the results of ab initio fully relativistic, full-potential local spin-density functional calculations. Theoretical estimates of the bulk modulus are given also for Np 2 Ni 17 , for which B 0 is predicted to assume values intermediate between those measured for Lu 2 Ni 17 and Np 2 Co 17 .

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Crystal structure and magnetic properties of Lu2Co17−xSix single crystals

Cited by 14 publications

References 25 publications

Influence of Ru on magnetic properties of Y2T17 (T = Fe, Co) and Y2Fe16Si single crystals

Influence of Ru on magnetic properties of Y2T17 (T = Fe, Co) and Y2Fe16Si single crystals

Magnetic properties of Tm2Fe17-xSix alloys

Structural investigation ofNp2Co17and analogue compounds under pressure

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