Influence of Hydrostatic Pressure on Magnetic Properties of (Sr,La)(Ru,Cr,Mn)O<sub>3</sub>

Pietosa, J.; Wiśniewski, A.; Puźniak, R.; Koleśnik, S.; Majjiga, M.; Dąbrowski, B.

doi:10.12693/aphyspola.111.159

Cited by 5 publications

(1 citation statement)

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“…[22] In addition, the x = 0.9 compo-sition does not exhibit a distinctive invar effect, which was observed below Curie temperature for SrRuO 3 . [23] Suppression of the invar effect with a small amount of Mn substitution in SrRuO 3 is similar to both Cr-and La-substitution, [24,25] and introduction of Ru-vacancy. [26]…”

Section: A Neutron Powder Diffraction and Structural Detailsmentioning

confidence: 85%

Structural and physical properties of $SrMn_{1-x}Ru_xO_3$ perovskites

Kolesnik,

Dabrowski,

Chmaissem

2008

Preprint

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We combine the results of magnetic and transport measurements with neutron diffraction data to construct the structural and magnetic phase diagram of the entire family of SrMn1−xRuxO3 (0x 1) perovskites. We have found antiferromagnetic ordering of the C type for lightly Rusubstituted materials (0.06 x 0.5) in a similar manner to RySr1−yMnO3 (R=La, Pr), due to the generation of Mn 3+ in both families of manganite perovskites by either B-site substitution of Ru 5+ for Mn 4+ or A-site substitution of R 3+ for Sr 2+ . This similarity is driven by the same ratio of d 4 /d 3 ions in both classes of materials for equivalent substitution level. In both cases, a tetragonal lattice distortion is observed, which for some compositions (0.06 x 0.2) is coupled to a C-type AF transition and results in a first order magnetic and resistive transition. Heavily substituted SrMn1−xRuxO3 materials are ferromagnetic due to dominating exchange interactions between the Ru 4+ ions. Intermediate substitution (0.6 x 0.7) leads to a spin-glass behavior instead of a quantum critical point reported previously in single crystals, due to enhanced disorder.

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