Transport and superconducting properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">RNi</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">B</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>C (R=Y,nLu) si

Rathnayaka, K. D. D.; Bhatnagar, Anil K.; Parasiris, A.; Naugle, D. G.; Canfield, Paul C.; Cho, B. K.

doi:10.1103/physrevb.55.8506

Cited by 108 publications

(92 citation statements)

References 102 publications

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“…One of the interesting features of some borocarbides (R=Er, Lu, Y) is the vortex lattice (VL) with unusual square symmetry [11][12][13][14] observed in the mixed state for magnetic fields H directed along tetragonal c-axis at H > ∼ 1 kOe. Square symmetry of VL can be connected 11,8 with the anisotropy of the upper critical magnetic field H c2 (T ) observed in the ab-plane for LuNi 2 B 2 C. 8,9 Practically no anisotropy of H c2 (T ) was found for YNi 2 B 2 C, 6,9 although this compound is very similar to LuNi 2 B 2 C. The reason for the difference in the behavior of these two borocarbides is still unclear.…”

Section: Introductionmentioning

confidence: 96%

“…These parameters are compared in Table I with those reported recently for LuNi 2 B 2 C and YNi 2 B 2 C single crystals. 55,9,7,8 It should be pointed out, that the resistivity of borocarbides is practically isotropic. The small difference (≈ 2%) between the in-plane resistivity ρ a and the resistivity along the c-axis ρ c observed for YNi 2 B 2 C single crystals 7 at T =15÷300 K is well within the experimental uncertainty.…”

Section: A Resistivity and Upper Critical Magnetic Fieldmentioning

confidence: 99%

“…3) is 0.27 K which is close to the values 0.2÷0.25 K typical for single crystals. 55,9,7 The PC UNAN LuNi 2 B 2 C sample has a lower T c (14.7 K), a wider superconducting transition and a more than one order of magnitude higher value of ρ xx (17 K).…”

Section: A Resistivity and Upper Critical Magnetic Fieldmentioning

confidence: 99%

“…Also the value of T c =16.7 K is slightly higher than that reported for single crystals (15.8÷16.5 K, see Refs. 55,9,7,8). The width of the superconductig transition ∆T c (determined from zero field ac-susceptibility curve, see Fig.…”

Section: A Resistivity and Upper Critical Magnetic Fieldmentioning

confidence: 99%

“…1, 2 Despite the fact that the borocarbides have a strongly anisotropic, layered tetragonal crystal structure, their electronic properties indicate three-dimensionality showing only a little anisotropy. [3][4][5][6][7][8][9] Borocarbides based on magnetic rare earths show a wide range of competing effects between superconductivity and magnetism, see, e.g., Ref. 10.…”

Section: Introductionmentioning

confidence: 99%

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Hall effect inLuNi2B2Cand<

et al. 1999

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The Hall effect in LuNi2B2C and YNi2B2C borocarbides has been investigated in normal and superconducting mixed states. The Hall resistivity ρxy for both compounds is negative in the normal as well as in the mixed state and has no sign reversal below Tc typical for high-Tc superconductors. In the mixed state the behavior of both systems is quite similar. The scaling relation ρxy ∼ ρ β xx (ρxx is the longitudinal resistivity) was found with β = 2.0 and 2.1 for annealed Luand Y-based compounds, respectively. The scaling exponent β decreases with increasing degree of disorder and can be varied by annealing. This is attributed to a variation of the strength of flux pinning. In the normal state weakly temperature dependent Hall coefficients were observed for both compounds. A distinct nonlinearity in the ρxy dependence on field H was found for LuNi2B2C in the normal state below 40 K, accompanied by a large magnetoresistance (MR) reaching +90% for H = 160 kOe at T = 20 K. At the same time for YNi2B2C only linear ρxy(H) dependences were observed in the normal state with an approximately three times lower MR value. This difference in the normal state behavior of the very similar Lu-and Y-based borocarbides seems to be connected with the difference in the topology of the Fermi surface of these compounds.

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Section: Introductionmentioning

confidence: 96%

Section: A Resistivity and Upper Critical Magnetic Fieldmentioning

confidence: 99%

Section: A Resistivity and Upper Critical Magnetic Fieldmentioning

confidence: 99%

Section: A Resistivity and Upper Critical Magnetic Fieldmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hall effect inLuNi2B2Cand<

et al. 1999

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Crystal Growth of High-melting Multi-component Rare Earth-Transition Metal Intermetallic Compounds from the Melt

Behr¹,

Löser²,

Graw³

et al. 2000

Cryst. Res. Technol.

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The crystal growth of different classes of high melting multi‐component Rare Earth‐Transition Metal‐Compounds by vertical floating zone melting with inductive heating has been investigated. Phase diagram features of the multi‐component systems relevant for the crystallization process have been revealed. The critical zone travelling rate for RENi2B2C crystal growth is one order of magnitude smaller than for RE2TMSi3 compounds. This is attributed to different solidification modes of both classes of compounds, peritectic and congruent melting, respectively. The crystal perfection, element segregation and selected properties of the bulk crystals such as critical temperature of superconductivity were studied as function of the axis co‐ordinate. In the case of RE2TMSi2 plate‐like RESi or RESi2 precipitates were detected in the single crystalline matrix. They were partially dissolved by annealing and subsequent quenching. The anisotropy of various superconducting and magnetic properties was determined at YNi2B2C and TbNi2B2C single crystalline specimens.

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Crystal Growth of Magnetic Materials

Behr

Löser

2007

Handbook of Magnetism and Advanced Magnetic Materials

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In this chapter, the various methods for crystal growth of magnetic materials are summarized and principles of choosing the appropriate growth method, which depends on phase diagram features of the alloy system, the required size, physical, and chemical perfection of single crystalline samples, are briefly discussed. The crystal growth of the following classes of materials is considered: soft magnetic pure metals and alloys, highly anisotropic compounds for high‐density magnetic recording media, rare earth–transition metal compounds for high‐performance permanent magnets, high‐magnetostrictive intermetallic compounds and ferromagnetic shape memory alloys for magnetomechanical applications, magnetocaloric materials, selected intermetallic compounds for spintronics, multiferroic materials, and some other less‐common magnetic compounds.

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Transport and superconducting properties ofRNi2B2C (R=Y,nLu) si

Cited by 108 publications

References 102 publications

Hall effect inLuNi2B2Cand<

Hall effect inLuNi2B2Cand<

Crystal Growth of High-melting Multi-component Rare Earth-Transition Metal Intermetallic Compounds from the Melt

Crystal Growth of Magnetic Materials

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