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Browsing by Author "Blanchard N."

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Antiferromagnetic properties of a water-vapor-inserted YBa 2Cu3O6.5 compound studied by NMR, NQR, and μSR

Dooglav A.; Egorov A.; Mukhamedshin I.; Savinkov A.; Alloul H.; Bobroff J.; MacFarlane W.; Mendels P.; Collin G.; Blanchard N.; Picard P.; King P.; Lord J. (2004)

We present a detailed NQR, nuclear magnetic resonance (NMR), and μSR study of the magnetic phase obtained during a topotactic chemical reaction of YBa2Cu3O6.5 high-temperature superconductor with low-pressure water vapor. ...
Antiferromagnetism in hydrated 123 compounds

Dooglav A.; Egorov A.; Mukhamedshin I.; Savinkov A.; Alloul H.; Bobroff J.; MacFarlane W.; Mendels P.; Collin G.; Blanchard N.; Picard P. (1999)

Copper nuclear quadrupole resonance and zero-field nuclear magnetic resonance (ZFNMR) studies of YBa2Cu3O6.5 show that a magnetic phase appears in underdoped 123 superconductors treated in ambient moist air. The studies ...
Antiferromagnetism in water doped YBa2Cu3O6+x for x ∼ 0.5

MacFarlane W.; Mendels P.; Bobroff J.; Dooglav A.; Egorov A.; Alloul H.; Blanchard N.; Collin G.; Picard P.; Keren A.; King P.; Lord J. (2000)

We report zero-field (ZF) μSR on a series of antiferromagnetic (AFM) samples of YBa2Cu3O6.4 reacted with water. We find several oscillating signals whose amplitudes vary with water content and temperature, and for high ...
Cobalt charge states in sodium cobaltates at intermediate dopings

Lang G.; Bobroff J.; Alloul H.; Mukhamedshin I.; Collin G.; Blanchard N. (2009)

A likely crucial parameter in explaining the peculiar magnetism of NaxCoO2 cobaltates in their paramagnetic state is their charge and spin states in the cobalt layers, responsible for the electronic properties. We examine ...
Dynamics and distribution of doped holes in the CuO2 plane of slightly doped antiferromagnetic YBa2(Cu1-zLiz)3O6+x (x < 0.1) studied by Cu(1) NQR

Savinkov A.; Dooglav A.; Alloul H.; Mendels P.; Bobroff J.; Collin G.; Blanchard N. (2010)

Incidence of doped holes in the CuO2 plane on the AF state was studied by Cu(1) nuclear quadrupole resonance (NQR) in slightly doped YBa2(Cu1-zLiz)3O6+x compounds. Inhomogeneous distribution of doped holes in the plane was ...
Dynamics and distribution of doped holes in the CuO2 plane of slightly doped Y1-y CayBa2Cu3O 6 studied by Cu(1) NQR

Savinkov A.; Dooglav A.; Alloul H.; Mendels P.; Bobroff J.; Collin G.; Blanchard N. (2009)

Cu(1) nuclear quadrupole resonance (NQR) in slightly doped YBCO6: Ca compounds allows us to study the incidence of doped holes on the antiferromagnetic state. Distributions of transverse (1/ T2) and longitudinal (1/ T1) ...
Na atomic order, Co charge disproportionation and magnetism in Na xCoO2 for large Na contents

Alloul H.; Mukhamedshin I.; Collin G.; Blanchard N. (2008)

We have synthesized and characterized four different stable phases of Na ordered NaxCoO2, for 0.65<x<0.8. Above 100 K they display similar Curie-Weiss susceptibilities as well as ferromagnetic q=0 spin fluctuations in the ...
Na NMR evidence for charge order and anomalous magnetism in Na xCoO2

Mukhamedshin I.; Alloul H.; Collin G.; Blanchard N. (2004)

The aligned single phase powder samples were provided by the material synthesis and characterization of a sodium (Na) nuclear magnetic resonance (NMR) evidence for change order and anomalous magnetism in NaxCoO 2. Calculations ...
Superconductivity, charge order and anomalous magnetism in sodium cobaltates

Alloul H.; Mukhamedshin I.; Blanchard N.; Collin G. (2005)

Oriented powder samples of NaxCoO2, with quasi single phase composition have been synthesized and studied by x rays, SQUID magnetometry, 23Na and 59Co NMR. We evidence that the dry and superconducting (SC) samples with x ...

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Browsing by Author "Blanchard N."

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