Effects of doping with nanoscale Co3O4 particles on the superconducting properties of powder-in-tube processed MgB2 tapes

Kuroda, T.; Nakane, T.; Kumakura, Hiroaki

doi:10.1016/j.physc.2008.09.011

Cited by 16 publications

(9 citation statements)

References 26 publications

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“…It was found [11] that in Ho 2 O 3 -doped MgB 2 samples the magnetic HoB 4 impurities are formed, and the significant improvement in flux pinning was observed. The pinning enhancement was also observed by addition of ferromagnetic Fe 3 O 4 [12] and Co 3 O 4 [13] nanoparticles to the raw MgB 2 .…”

Section: Introductionmentioning

confidence: 78%

Pinning Properties of Cold-Processed MgB2 Composite Superconducting Tapes

Bazarov

Ćwik

Gajda

et al. 2012

J Supercond Nov Magn

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Superconducting tapes from MgB 2 and powders of magnetic Ni, Co, and non-magnetic Ti were fabricated by cold-processed powder-in-tube (PIT) method. The cupronickel was used as sheath material and no heat treatment was applied. The increasing of critical current was observed in the samples with additions of nickel and titanium. The microstructure and phase analysis of tape core was performed by X-ray diffraction spectroscopy. A direct correlation between type and amount of additives, and the critical current of the tapes has been observed.

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Section: Introductionmentioning

confidence: 78%

Pinning Properties of Cold-Processed MgB2 Composite Superconducting Tapes

Bazarov

Ćwik

Gajda

et al. 2012

J Supercond Nov Magn

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“…We therefore recommend the usage of our TinyBee approach especially in cases where a paramagnetic Meissner effect is observed using the standard setup of MPMS SQUID-magnetometers. [20,21,22,23]…”

Section: Comparison Of the Tinybee Setup With Different Commercial Ma...mentioning

confidence: 99%

Low-field extension for magnetometers (TinyBee) used for investigations on low-dimensional superconductors withB_c1< 5 G

Presnitz¹,

Herzinger²,

Scheidt³

et al. 2012

Meas. Sci. Technol.

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In this article a simple and easy to install low magnetic field extension of the SQUID magnetometer Quantum Design MPMS-7 is described. This has been accomplished by complementing the MPMS-7 magnet control system with a laboratory current supply for the low magnetic field region (B ≤ 200 G). This hard-and software upgrade provides a significant gain in the magnetic field accuracy up to an order of magnitude compared with the standard instrument's setup and is improving the resolution to better than 0.01 G below 40 G. The field control has been integrated into the Quantum Design MultiVu software for a transparent and user-friendly operation of this extension. The improvements achieved are especially useful, when low magnetic field strengths (B < 1 G) are required at high precision. The specific advantages of this application are illustrated by sophisticated magnetic characterisation of lowdimensional superconductors like Sc 3 CoC 4 and SnSe 2 {Co(η-C 5 H 5 ) 2 } x .

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“…MgB 2 tapes doped with nano-sized Co 3 O 4 (up to 1 mol %) showed a linear decrease in the transition temperature. 15 Enhanced transport current density was observed when a small amount ( 0.03 wt. %) of nano-sized FeF 2 was added in YBCO.…”

Section: Introductionmentioning

confidence: 99%

Effect of nano-sized Co3O4 addition on the transport properties of YBa2Cu3O7−δ

Abd‐Shukor¹,

Nazrin

Aisyah

et al. 2014

AIP Conference Proceedings

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Abstract. The effect of nano-sized Co 3 O 4 (10 -30 nm) addition on YBa 2 Cu 3 O 7-(Co 3 O 4 ) x with x = 0 to 0.12 wt.% has been investigated by powder X-ray diffraction method, dc electrical resistance measurements and scanning electron microscopy. The Co 3 O 4 particle size was larger than the coherence length but smaller than the penetration depth of the YBa 2 Cu 3 O 7-superconductor. The onset transition temperature (T c onset ) showed no significant changes for low Co 3 O 4 addition (x 0.02 wt. %) and then decreased monotonically with the increase in Co 3 O 4 content indicating a pair-breaking like mechanism in T c suppression for x = 0.03 to 0.12 wt. %. A sudden broadening of the superconducting-transitionwidth for x 0.11 wt. % was also observed. The transport properties were measured and related to the microstructure. Scanning electron micrographs showed homogeneous distribution of Co 3 O 4 throughout the samples and the distance between particles was smaller than 1 μm but larger than the typical Abrikosov vortex lattice constant.

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Effects of doping with nanoscale Co3O4 particles on the superconducting properties of powder-in-tube processed MgB2 tapes

Cited by 16 publications

References 26 publications

Pinning Properties of Cold-Processed MgB2 Composite Superconducting Tapes

Pinning Properties of Cold-Processed MgB2 Composite Superconducting Tapes

Low-field extension for magnetometers (TinyBee) used for investigations on low-dimensional superconductors withB_c1< 5 G

Effect of nano-sized Co3O4 addition on the transport properties of YBa2Cu3O7−δ

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Effects of doping with nanoscale Co3O4 particles on the superconducting properties of powder-in-tube processed MgB2 tapes

Cited by 16 publications

References 26 publications

Pinning Properties of Cold-Processed MgB2 Composite Superconducting Tapes

Pinning Properties of Cold-Processed MgB2 Composite Superconducting Tapes

Low-field extension for magnetometers (TinyBee) used for investigations on low-dimensional superconductors withBc1< 5 G

Effect of nano-sized Co3O4 addition on the transport properties of YBa2Cu3O7−δ

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Product

Resources

About

Low-field extension for magnetometers (TinyBee) used for investigations on low-dimensional superconductors withB_c1< 5 G