Magnetic and electrical properties of Mg1-xCuxO solid solutions and magnetic shielding in Cu-Mg1-xCuxO structures / Samokhvalov AA,Arbuzova TI,Viglin NA,Osipov VV,Solin NI,Naumov SV,Bamburov VG,Lobachevskaya NI,Reznitskikh OG // PHYSICS OF THE SOLID STATE. - 1999. - V. 41, l. 2. - P. 262-264.

ISSN/EISSN:

1063-7834 / нет данных

Type:

Article

Abstract:

Mg1-xCuxO solid solutions having an NaCl structure with 0 less than or equal to x less than or equal to 0.20 are synthesized and Cu-Mg1-xCuxO structures are prepared for superconductivity studies. The magnetic susceptibility chi, electron paramagnetic resonance (EPR), and electrical conductivity of the solid solutions are studied at temperatures of 5-550 K. It is shown that chi(-1) (T) obeys the Curie-Weiss law with a paramagnetic Curie temperature Theta close to zero and an effective magnetic moment mu(eff) = 1.9 mu(B), close to the 1.73 mu(B) of a Cu2+ ion with spin S = 1/ 2. The width Delta H of the EPR line depends weakly on temperature and increases as x is raised. The volume narrowing of the EPR linewidth Delta H is used to estimate the exchange interaction parameter, 3X10(-4) eV. The g-factor is close to 2 and is temperature independent. The electrical conductivity of Mg1-xCuxO at T = 300 K is approximate to 10(-11) - 10(-12)Ohm(-1) cm(-1) for x = 0 and increases to 10(-5) -10(-6) Ohm(-1) cm(-1) for x = 0.15-0.20. The conductivity is p-type. Magnetic shielding is observed in Cu-Mg1-xCuxO structures with x = 0.15 and 0.20. The possible connection of this phenomenon with interference superconductivity in the contact layer of the structure is discussed. (C) 1999 American Institute of Physics. {[}S1063-7834(99)02002-X].

Author keywords:

нет данных

DOI:

10.1134/1.1130764

Web of Science ID:

ISI:000079470200020

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	FEB
Publisher	AMER INST PHYSICS
Address	CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 USA
Language	English
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
ResearcherID-Numbers	Bamburov, Vitaliy/J-3241-2017 Solin, Nikolay/K-2920-2013 Arbuzova, Tamara/K-1702-2013 Viglin, Nick/J-6791-2013
ORCID-Numbers	Solin, Nikolay/0000-0002-0932-877X Arbuzova, Tamara/0000-0003-0360-2210 Viglin, Nick/0000-0002-9103-7241 Naumov, Sergey/0000-0003-4527-6396 Reznitskikh, Olga/0000-0002-8036-890X
Number-of-Cited-References	7
Usage-Count-Since-2013	1
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	181YC