Phase transitions in La1-xCaxMnO3 (0.2 < x < 0.33) single crystals / Zainullina R. I.,Bebenin N. G.,Ustinov V. V.,Mukovskii Ya. M.,Shulyatev D. A. // PHYSICAL REVIEW B. - 2007. - V. 76, l. 1.

ISSN/EISSN:

2469-9950 / 2469-9969

Type:

Article

Abstract:

The study of the concentration dependence of the Curie temperature and the type of the magnetic transition in La1-xCaxMnO3 (0.2 < x < 0.33) single crystals prepared under the same conditions was performed. It has been shown that the point (x(t)=0.25,T-t=205 K) on the (x,T) plane is the tricritical point, so that if T-C < T-t, the ferromagnetic-to-paramagnetic transition is second order, while at T-C > T-t, the transition is first order. The longitudinal sound velocity and the internal friction have been measured. The analysis of the magnetization and elastic property data has revealed that the magnetic transition is not accompanied by a structural transformation. The structural transition between the low temperature orthorhombic phase and the high temperature orthorhombic phase has been shown to occur in the paramagnetic state.

Author keywords:

FERROMAGNETIC MANGANITES; MAGNETIC TRANSITION; TEMPERATURE; MAGNETORESISTANCE; TRANSPORT; 1ST-ORDER

DOI:

10.1103/PhysRevB.76.014408

Web of Science ID:

ISI:000248487900065

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUL
Publisher	AMER PHYSICAL SOC
Address	ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Language	English
Article-Number	014408
EISSN	2469-9969
Keywords-Plus	FERROMAGNETIC MANGANITES; MAGNETIC TRANSITION; TEMPERATURE; MAGNETORESISTANCE; TRANSPORT; 1ST-ORDER
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	bebenin@imp.uran.ru
ResearcherID-Numbers	Ustinov, Vladimir/G-7501-2011 Bebenin, Nikolay/K-6955-2013 Shulyatev, Dmitry/M-7278-2014 Zainullina, Rimma/J-4287-2013 Svetlana, Ahmetzhanova/H-3797-2012
ORCID-Numbers	Ustinov, Vladimir/0000-0002-5155-7947 Bebenin, Nikolay/0000-0003-2035-6103 Shulyatev, Dmitry/0000-0002-7642-0277 Zainullina, Rimma/0000-0002-0353-4775
Number-of-Cited-References	36
Usage-Count-Since-2013	6
Journal-ISO	Phys. Rev. B
Doc-Delivery-Number	196MY