influence of the cation substitution on the magnetic properties of lico2o4 and li(me,co)2o4 spinels

Clicks: 215
ID: 190672
2004
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Steady

Ranked #92 of 111 articles by views in medicinal chemistry (shariqah (united arab emirates))

Most read Least read

Bar heights use a square-root scale.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
Lithium-based cells LiCo2O4 have been characterized by magnetic techniques, looking at the influence of the partial substitution of cobalt by 3d or 4d transition metal elements (Fe, Ni, Cu, Cr, Mo). The non-substituted compound LiCo2O4 behaves as an antiferromagnet, with a Néel temperature TN of 30 K, although antiferromagnetic interactions are much more important, as suggested by a Weiss parameter Θ of the order of ‑225 K. In the solid solution Li(NixCo2‑x)O4 the Weiss parameter Θ changes with x(Ni), reaching large positive values (e.g., Θ ~ +230 K, for x = 0.5). This phenomenon suggests the existence of a canted‑antiferromagnetic or ferrimagnetic structures with large ferromagnetic components. Substitution of cobalt by other 3d or 4d transition metals in the LiMe0.5Co1.5O4 series shows dramatic effects with respect to the non-substituted LiCo2O4 compound : copper completely suppresses the magnetic order, while iron increases TN to almost room temperature. No modifications are observed when molybdenum substitutes cobalt, while chromium transforms the AF order in a ferromagnetic one, with Tc of about 90 K.

Se ha caracterizado por técnicas magnéticas, el efecto de la sustitución parcial de Co por elementos de transición 3d o 4d (Fe, Ni, Cu, Cr, Mo) en celdas LiCo2O4 a base de litio. El compuesto no sustituído LiCo2O4, se comporta como un antiferromagneto de temperatura de Néel TN de 30 K, aunque existen interacciones antiferromagnéticas mucho más importantes, como lo indica un parámetro de Weiss Θ del orden de -225K. En la solución sólida Li(NixCo2‑x)O4, el parámetro de Weiss Θ cambia con x(Ni), alcanzando valores positivos altos (e.g., Θ ~ +230K, para x=0.5). Este fenómeno sugiere la existencia de una estructura antiferromagnética inclinada (“AF-canted”) o de una estructura ferrimagnética, donde predominan componentes ferromagnéticas importantes. La sustitución del cobalto por otros elementos de transición 3d o 4d en la serie LiMe0.5Co1.5O4 muestra un efecto dramático con respecto al compuesto no sustituído LiCo2O4 : el cobre suprime completamente el orden magnético, mientras que el hierro incrementa su TN, hasta alcanzar prácticamente la temperatura ambiente. La sustitución del cobalto por el molibdeno no produce modificaciones, mientras que el cromo transforma el orden antiferromagnético en un orden ferromagnético, con una Tc de alrededor 90 K.
Reference Key
l.2004boletninfluence Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors J. L. Gautier, E. Meza, T. Guizouarn, V. Bodenez, O. Peña
Are you one of these authors? Claim your profile
Journal medicinal chemistry (shariqah (united arab emirates))
Year 2004
DOI
DOI not found
URL
http://ceramicayvidrio.revistas.csic.es/index.php/ceramicayvidrio/article/view/420/438
Keywords
glass Ceramics

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.