M
M. R. Ibarra
Researcher at University of Zaragoza
Publications - 460
Citations - 14896
M. R. Ibarra is an academic researcher from University of Zaragoza. The author has contributed to research in topics: Magnetization & Magnetic anisotropy. The author has an hindex of 60, co-authored 448 publications receiving 13724 citations. Previous affiliations of M. R. Ibarra include Spanish National Research Council & University of Southampton.
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Journal ArticleDOI
Size dependence of the magnetic relaxation and specific power absorption in iron oxide nanoparticles
Enio Lima,Teobaldo E. Torres,Liane M. Rossi,Hercílio R. Rechenberg,Thelma S. Berquó,Alfonso Ibarra,Clara Marquina,M. R. Ibarra,Gerardo F. Goya +8 more
TL;DR: In this article, a series of iron oxide nanoparticles with average sizes hdi ranging from 3 to 23 nm were reported, which were prepared by thermal decomposition of Iron(III) acetylacetonate in organic media.
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Experimental study of the structural and magnetic properties of γ − Fe 2 O 3 nanoparticles
S. M. Yusuf,S. M. Yusuf,J. M. De Teresa,M. D. Mukadam,J. Kohlbrecher,M. R. Ibarra,M. R. Ibarra,Jordi Arbiol,P. Sharma,Shailendra K. Kulshreshtha +9 more
TL;DR: In this paper, the symmetry of crystal structure of nanoparticles with cation vacancy distribution has been studied by using high resolution transmission electron microscopy (TEM), electron energy loss spectroscopy, x-ray diffraction, neutron diffraction and polarized small angle neutron scattering (SANS) techniques.
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Griffiths-like phase of magnetocaloric R 5 (Si x Ge 1-x ) 4 ( R=Gd , Tb, Dy, and Ho)
André Pereira,Luis Morellón,Luis Morellón,César Magén,João Ventura,Pedro A. Algarabel,M. R. Ibarra,M. R. Ibarra,J. B. Sousa,João P. Araújo +9 more
TL;DR: In this paper, the Griffiths-like phase was discovered in several compounds of the O(II) structure. But this was restricted to the samples which present the Gd, Tb, Dy, and Ho phases at room temperature.
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Anomalous behavior of the electrical resistivity in the giant magnetocaloric compound Gd 5 (Si 0.1 Ge 0.9 ) 4
J. B. Sousa,M.E. Braga,F. C. Correia,F. Carpinteiro,Luis Morellón,Pedro A. Algarabel,M. R. Ibarra +6 more
TL;DR: In this paper, high-resolution electrical resistance R and dR/dT measurements have been done in the (giant magnetocaloric) orthorhombic Gd 5 (Si 0. 1 Ge 0. 9 ) compound to study their evolution through more than 50 thermal cycles between 300 K and 10 K.
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NMR probe of phase segregation in electron doped mixed valence manganites
TL;DR: Evidence is given for the existence of electronic phase segregation of microscopic ferromagnetic regions of double exchange coupled Mn spins over a charge ordered antiferromagnetic background.