Coexistence of ferrimagnetic long-range order and cluster superparamagnetism in Li1-xNi1+xO2

D. Mertz; F. Celestini; B. E. Vugmeister; H. Rabitz; J. M. Debierre

Coexistence of ferrimagnetic long-range order and cluster superparamagnetism in Li_1-xNi_1+xO₂

D. Mertz, F. Celestini, B. E. Vugmeister, H. Rabitz, J. M. Debierre

Research output: Contribution to journal › Article › peer-review

Abstract

We study numericaly and analytically a simple model for the magnetic properties of moderately impure (x≤0.2) Li_1-xNi_1+xO₂ compounds. The model largely relies on available experimental results and it is investigated by complementary methods: percolation and Monte Carlo simulations, together with random-field analytical theory. Our results conclusively show a critical change of the magnetic response above a given concentration x_c=0.11-0.14. We find that, beyond this concentration, the unusual features of the spontaneous magnetization observed experimentally result from the coexistence of ferrimagnetic long-range order with cluster superparamagnetism.

Original language	English (US)
Article number	094437
Pages (from-to)	944371-944378
Number of pages	8
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	64
Issue number	9
State	Published - Sep 1 2001

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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title = "Coexistence of ferrimagnetic long-range order and cluster superparamagnetism in Li1-xNi1+xO2",

abstract = "We study numericaly and analytically a simple model for the magnetic properties of moderately impure (x≤0.2) Li1-xNi1+xO2 compounds. The model largely relies on available experimental results and it is investigated by complementary methods: percolation and Monte Carlo simulations, together with random-field analytical theory. Our results conclusively show a critical change of the magnetic response above a given concentration xc=0.11-0.14. We find that, beyond this concentration, the unusual features of the spontaneous magnetization observed experimentally result from the coexistence of ferrimagnetic long-range order with cluster superparamagnetism.",

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T1 - Coexistence of ferrimagnetic long-range order and cluster superparamagnetism in Li1-xNi1+xO2

AU - Mertz, D.

AU - Celestini, F.

AU - Vugmeister, B. E.

AU - Rabitz, H.

AU - Debierre, J. M.

PY - 2001/9/1

Y1 - 2001/9/1

N2 - We study numericaly and analytically a simple model for the magnetic properties of moderately impure (x≤0.2) Li1-xNi1+xO2 compounds. The model largely relies on available experimental results and it is investigated by complementary methods: percolation and Monte Carlo simulations, together with random-field analytical theory. Our results conclusively show a critical change of the magnetic response above a given concentration xc=0.11-0.14. We find that, beyond this concentration, the unusual features of the spontaneous magnetization observed experimentally result from the coexistence of ferrimagnetic long-range order with cluster superparamagnetism.

AB - We study numericaly and analytically a simple model for the magnetic properties of moderately impure (x≤0.2) Li1-xNi1+xO2 compounds. The model largely relies on available experimental results and it is investigated by complementary methods: percolation and Monte Carlo simulations, together with random-field analytical theory. Our results conclusively show a critical change of the magnetic response above a given concentration xc=0.11-0.14. We find that, beyond this concentration, the unusual features of the spontaneous magnetization observed experimentally result from the coexistence of ferrimagnetic long-range order with cluster superparamagnetism.

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JO - Physical Review B - Condensed Matter and Materials Physics

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ER -

Coexistence of ferrimagnetic long-range order and cluster superparamagnetism in Li_1-xNi_1+xO₂

Abstract

All Science Journal Classification (ASJC) codes

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