Giant thermal hysteresis of sound velocity and internal friction in a La0.8Sr0.2MnO3 single crystal / Zainullina RI,Bebenin NG,Burkhanov AM,Ustinov VV,Mukovskii YM,Arsenov AA // JETP LETTERS. - 2001. - V. 74, l. 2. - P. 115-117.

ISSN/EISSN:

0021-3640 / нет данных

Type:

Article

Abstract:

Temperature dependences of the velocity of longitudinal sound V-1 and the internal friction Q(-1) are studied for a La0.8Sr0.2MnO3 single crystal in the temperature range 5-350 K. The latter includes the temperature of the structural phase transition T-s approximate to 95 K (from the Pnma orthorhombic low-temperature phase to the R (3) over barc rhombohedral high-temperature one) and the Curie point T-c = 308 K. Near the temperatures T-s and T-c, the curves V-1(T) and Q(-1)(T) exhibit pronounced singularities. Outside the vicinities of T-s and T-c, the velocity of sound monotonically decreases with increasing temperature. A thermal hysteresis of giant width is observed in the aforementioned dependences. The hysteresis is attributed to the following mechanism: when the crystal under study is heated starting at temperatures T < T-s, some regions occupied by the Pnma low-temperature phase are retained in the R (3) over barc matrix up to the temperature T = 350 K. (C) 2001 MAIK ``Nauka/Interperiodica{''}.

Author keywords:

COLOSSAL MAGNETORESISTANCE; PHASE-TRANSITIONS; MANGANITES; LA1-XSRXMNO3

DOI:

10.1134/1.1405898

Web of Science ID:

ISI:000170800900013

Соавторы в МНС:

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Другие поля

Поле	Значение
Publisher	AMER INST PHYSICS
Address	2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
Language	English
Keywords-Plus	COLOSSAL MAGNETORESISTANCE; PHASE-TRANSITIONS; MANGANITES; LA1-XSRXMNO3
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
ResearcherID-Numbers	Ustinov, Vladimir/G-7501-2011 Zainullina, Rimma/J-4287-2013 Bebenin, Nikolay/K-6955-2013
ORCID-Numbers	Ustinov, Vladimir/0000-0002-5155-7947 Zainullina, Rimma/0000-0002-0353-4775 Bebenin, Nikolay/0000-0003-2035-6103
Number-of-Cited-References	16
Usage-Count-Since-2013	1
Journal-ISO	Jetp Lett.
Doc-Delivery-Number	469ED