Publication detail

Crystal growth and characterisation of (DyxLa1-x)(2)Ti2O7 crystals

Jacko, R. Mihalik, M. Mihaliki, M. Zentkova, M. Roupcova, P.

Original Title

Crystal growth and characterisation of (DyxLa1-x)(2)Ti2O7 crystals

Type

journal article in Web of Science

Language

English

Original Abstract

LaTiO3.5 crystals were grown by optical floating zone technique in air, O-2, or Ar. Crystal structure varies between orthorhombic Pna2(1) (air, O-2) and monoclinic P2(1) (Ar). Crystals are transparent (air, O-2) or opaque (Ar) with amber or black colour. Magnetisation resembles the properties of LaTiO3.5. (DyxLa1-x)(2)Ti2O7 crystals were grown in O-2. The solubility of dopant (La or Dy) in the parent compound is limited. Two phases with Pna2(1) and Fd (3) over barm structure coexist in the range from x = 0.32 to 0.68. The a-axis of Pna2(1) is intact by substitution of La3+ by Dy3+; both b - and c-axes decrease. The a-axis of Fd (3) over barm increases with substitution of Dy3+ by La3+ and the spin freezing temperature T-f shifts to a higher temperature. Either of the new magnetic phase (Pna2(1) structure) or dynamical behaviour of spins in Fd (3) over barm phase exists below x = 0.68 in the range between the transition to 'spin ice' state T-i and T-f.

Keywords

optical floating zone; single crystals; crystal structure; ferroelectrics; spin ice

Authors

Jacko, R.; Mihalik, M.; Mihaliki, M.; Zentkova, M.; Roupcova, P.

Released

17. 2. 2020

Publisher

REDAKCIA KOVOVE MATERIALY

Location

BRATISLAVA 38

ISBN

0023-432X

Periodical

Kovové materiály

Year of study

58

Number

1

State

Slovak Republic

Pages from

59

Pages to

70

Pages count

12

URL

http://www.elis.sk/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=6595&category_id=162&option=com_virtuemart&vmcchk=1&Itemid=1

BibTex

@article{BUT169003,
  author="Jacko, R. and Mihalik, M. and Mihaliki, M. and Zentkova, M. and Roupcova, P.",
  title="Crystal growth and characterisation of (DyxLa1-x)(2)Ti2O7 crystals",
  journal="Kovové materiály",
  year="2020",
  volume="58",
  number="1",
  pages="59--70",
  doi="10.4149/km\{_}2020\{_}1\{_}59",
  issn="0023-432X",
  url="http://www.elis.sk/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=6595&category_id=162&option=com_virtuemart&vmcchk=1&Itemid=1"
}