Electrical and magnetic properties of the complete solid solution series between SrRuO3 and LaRhO3: Filling t2g versus tilting



Barton, Phillip T, Seshadri, Ram and Rosseinsky, Matthew J ORCID: 0000-0002-1910-2483
Electrical and magnetic properties of the complete solid solution series between SrRuO3 and LaRhO3: Filling t2g versus tilting. Phys. Rev. B, 83. 064417 - ?.

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Abstract

A complete solid solution series between the t2g^4 perovskite ferromagnet SrRuO3 and the diamagnetic t2g^6 perovskite LaRhO3 has been prepared. The evolution with composition x in (SrRuO3)(1-x)(LaRhO3)(x) of the crystal structure and electrical and magnetic properties has been studied and is reported here. As x increases, the octahedral tilt angle gradually increases, along with the pseudocubic lattice parameter and unit cell volume. Electrical resistivity measurements reveal a compositionally driven metal to insulator transition between x = 0.1 and 0.2. Ferromagnetic ordering gives over to glassy magnetism for x > 0.3 and no magnetic ordering is found above 2 K for x > 0.5. M_sat and Theta_CW decrease with increasing x and remain constant after x = 0.5. The magnetism appears poised between localized and itinerant behavior, and becomes more localized with increasing x as evidenced by the evolution of the Rhodes-Wohlfarth ratio. mu_eff per Ru is equal to the quenched spin-only S value across the entire solid solution. Comparisons with Sr(1-x)Ca(x)RuO3 reinforce the important role of structural distortions in determining magnetic ground state. It is suggested that electrical transport and magnetic properties are not strongly coupled in this system.

Item Type: Article
Uncontrolled Keywords: cond-mat.mtrl-sci, cond-mat.mtrl-sci, cond-mat.str-el
Depositing User: Symplectic Admin
Date Deposited: 27 Jul 2016 15:11
Last Modified: 24 Oct 2019 11:10
DOI: 10.1103/PhysRevB.83.064417
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URI: http://livrepository.liverpool.ac.uk/id/eprint/3002579
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