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- W3100983477 abstract "The study of the ferrites YBaFe4-xGaxO7 shows that the substitution of Ga for Fe in YBaFe4O7 stabilizes the hexagonal symmetry for 0.40 ≤ x ≤ 0.70, at the expense of the cubic one. Using combined measurements of a.c. and d.c. magnetization, we establish that Ga substitution for Fe in YBaFe4O7 leads to an evolution from a geometrically frustrated spin glass (for x = 0) to a cationic disorder induced spin glass (x = 0.70). We also find an intermediate narrow range of doping where the samples are clearly phase separated having small ferrimagnetic clusters embedded in a spin glass matrix. The origin of the ferrimagnetic clusters lies in the change in symmetry of the samples from cubic to hexagonal (and a consequent lifting of the geometrical frustration) as a result of Ga doping. We also show the presence of exchange bias and domain wall pinning in these samples. The cause of both these effects can be traced back to the inherent phase separation present in the samples." @default.
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- W3100983477 date "2012-01-01" @default.
- W3100983477 modified "2023-09-25" @default.
- W3100983477 title "Gallium substituted “114” YBaFe4O7: from a ferrimagnetic cluster glass to a cationic disordered spin glass" @default.
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- W3100983477 doi "https://doi.org/10.1039/c2jm15647d" @default.
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