Control of Magnetism via B-Site Order and Disorder in Y₂NiTiO₆ Perovskite

Gulay, Nataliya L, Lin, Hai, Krowitz, Anna, Sonni, Manel ORCID: 0000-0001-6872-445X, Manning, Troy D ORCID: 0000-0002-7624-4306, Daniels, Luke M ORCID: 0000-0002-7077-6125, Dyer, Matthew S ORCID: 0000-0002-4923-3003, Claridge, John B ORCID: 0000-0003-4849-6714 and Rosseinsky, Matthew J ORCID: 0000-0002-1910-2483 (2025) Control of Magnetism via B-Site Order and Disorder in Y₂NiTiO₆ Perovskite INORGANIC CHEMISTRY, 64 (41). pp. 20705-20713. ISSN 0020-1669, 1520-510X

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Abstract

The first reported phase in the Y<inf>2</inf>O<inf>3</inf>–NiO–TiO<inf>2</inf>chemical space, the Y<inf>2</inf>NiTiO<inf>6</inf>perovskite undergoes a temperature-induced order–disorder transition. Above ∼1700 K, it adopts the structure of a disordered CaTiO<inf>3</inf>-type orthorhombic perovskite with a = 5.26939(2), b = 5.60367(2), and c = 7.58137(3) Å, with the B site uniformly occupied by 0.5Ni+0.5Ti. Below this temperature, Y<inf>2</inf>NiTiO<inf>6</inf>adopts rock-salt ordering of the transition metals in a monoclinic unit cell (a = 5.26695(2), b = 5.60164(2), c = 7.57493(2) Å, β = 90.4940(2)°) with 0.9/0.1 ordering of the B site. Ordering of Ni and Ti changes the magnetic properties from spin-glass behavior in the orthorhombic phase to antiferromagnetic order (T<inf>N</inf>= 17 K) for the monoclinic phase, while the optical properties of both phases remain unchanged across the transition.

Item Type:	Article
Uncontrolled Keywords:	34 Chemical Sciences, 3406 Physical Chemistry
Divisions:	Faculty of Science & Engineering Faculty of Science & Engineering > School of Physical Sciences Faculty of Science & Engineering > School of Physical Sciences > Chemistry
Depositing User:	Symplectic Admin
Date Deposited:	14 Oct 2025 13:28
Last Modified:	23 May 2026 10:37
DOI:	10.1021/acs.inorgchem.5c03186
Open Access URL:	https://doi.org/10.1021/acs.inorgchem.5c03186
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3194837
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