Doping dependence of spin-lattice coupling and two-dimensional ordering in multiferroic hexagonal Y1-xLuxMnO3 (0 <= x <= 1) / Park Junghwan,Lee Seongsu,Kang Misun,Jang Kwang-Hyun,Lee Changhee,Streltsov S. V.,Mazurenko V. V.,Valentyuk M. V.,Medvedeva J. E.,Kamiyama T.,Park J. -G. // PHYSICAL REVIEW B. - 2010. - V. 82, l. 5.

ISSN/EISSN:

1098-0121 / нет данных

Type:

Article

Abstract:

We have examined a complete phase diagram of Y1-xLuxMnO3 with 0 <= x <= 1 by using bulk measurements and neutron-diffraction studies. With increasing Lu concentration, Curie-Weiss temperature and Neel temperature are found to increase continuously while the two-dimensional nature of short-range magnetic correlation persists even in the paramagnetic phase throughout the entire doping range. At the same time, the lattice constants and the unit-cell volume get contracted with Lu doping, i.e., chemical pressure effect. This decrease in the lattice constants and the unit-cell volume then leads naturally to an increased magnetic exchange interaction as found in our local spin-density approximation band calculations. We also discover that there is strong correlation in the temperature dependence of a volume anomaly at T-N and the magnetic moments.

Author keywords:

ELECTRONIC-STRUCTURE; YMNO3; DIFFRACTION; CRYSTAL; ANTIFERROMAGNET

DOI:

10.1103/PhysRevB.82.054428

Web of Science ID:

ISI:000281267800002

Соавторы в МНС:

Другие поля

Поле	Значение
Month	AUG 26
Publisher	AMER PHYSICAL SOC
Address	ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Language	English
Article-Number	054428
Keywords-Plus	ELECTRONIC-STRUCTURE; YMNO3; DIFFRACTION; CRYSTAL; ANTIFERROMAGNET
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	jgpark10@snu.ac.kr
ResearcherID-Numbers	Streltsov, Sergey/A-8293-2016 Medvedeva, Julia/F-5693-2015 Streltsov, Sergey/A-6674-2012 Mazurenko, Vladimir/E-7694-2011 Park, Je Geun/K-8571-2013 Mazurenko, Vladimir/P-9241-2017
ORCID-Numbers	Streltsov, Sergey/0000-0002-2823-1754
Funding-Acknowledgement	National Research Foundation of Korea {[}KRF-2008-220-C00012, R17-2008-033-01000-0, R31-2008-000-10029-0]; CNRF project; Russian Ministry of Science and Education {[}02.740.11.0217, MK-360.2009.2, MK-1162.2009.2]; Russian Foundation for Basic Research {[}RFFI-10-02-96011]
Funding-Text	We thank the Korea Basic Science Institute for allowing us to use a heat-capacity setup for this study. Works at Seoul National University and SungKyunKwan University were supported by the National Research Foundation of Korea (Grants No. KRF-2008-220-C00012, No. R17-2008-033-01000-0, and No. R31-2008-000-10029-0) and the CNRF project. Some of us (S.V.S., V.V.M., and M.V.V.) acknowledge supports by the Russian Ministry of Science and Education via programs (Grants No. 02.740.11.0217, No. MK-360.2009.2, and No. MK-1162.2009.2) and the Russian Foundation for Basic Research through Grant No. RFFI-10-02-96011.
Number-of-Cited-References	37
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	45
Journal-ISO	Phys. Rev. B
Doc-Delivery-Number	643BM