Colossal piezomagnetic response in magnetically pressed Zr+4 substituted cobalt ferrites

Abstract A remarkable 111% increase in magnetostriction (λ) and 435% increase in strain sensitivity (dλ/dH) (compared to normally compacted (NC) unsubstituted CoFe2O4 (CFO)) of Zr+4 doped CFO sample, Co1.2Zr0.2Fe1.6O4, prepared by magnetic field assisted compaction, have been reported in this study....

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Autores principales:	Monaji Vinitha Reddy, Abdellah Lisfi, Sabin Pokharel, Dibakar Das
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3875f9e3718f4161819d7d41acb065a9
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spelling	oai:doaj.org-article:3875f9e3718f4161819d7d41acb065a92021-12-02T11:53:08ZColossal piezomagnetic response in magnetically pressed Zr+4 substituted cobalt ferrites10.1038/s41598-017-08160-12045-2322https://doaj.org/article/3875f9e3718f4161819d7d41acb065a92017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08160-1https://doaj.org/toc/2045-2322Abstract A remarkable 111% increase in magnetostriction (λ) and 435% increase in strain sensitivity (dλ/dH) (compared to normally compacted (NC) unsubstituted CoFe2O4 (CFO)) of Zr+4 doped CFO sample, Co1.2Zr0.2Fe1.6O4, prepared by magnetic field assisted compaction, have been reported in this study. Magnetic field assisted compaction (MC) has been employed to process Zr-doped cobalt ferrites, Co1+xZrxFe2−2xO4 (0 ≤ × ≤ 0.4), to further improve the magnetoelastic properties. Saturation magnetization (M S ) and coercivity (H C ) increase from ~426 kA/m and ~4.4 kA/m respectively, for x = 0, to ~552 kA/m and ~7.11 kA/m respectively for x = 0.2. Dramatic increase in λ was observed for MC samples (~ −360 ppm and ~−380 ppm for x = 0 and x = 0.2 respectively) compared to the NC samples (~−181 ppm and ~−185 ppm for x = 0 and x = 0.2 respectively). A remarkable quadruple increase in dλ/dH was observed in Zr-doped (x = 0.2) cobalt-ferrite (~4.3 × 10−9 A−1m) compared to that of unsubstituted cobalt-ferrite (~1.24 × 10−9 A−1m), while a fivefold increase in dλ/dH was observed for magnetically compacted (MC) Zr doped cobalt ferrite (x = 0.2) (~4.3 × 10−9 A−1m) compared to normal compacted (NC) unsubstituted cobalt ferrite (~0.8 × 10−9 A−1m).Monaji Vinitha ReddyAbdellah LisfiSabin PokharelDibakar DasNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Monaji Vinitha Reddy Abdellah Lisfi Sabin Pokharel Dibakar Das Colossal piezomagnetic response in magnetically pressed Zr+4 substituted cobalt ferrites
description	Abstract A remarkable 111% increase in magnetostriction (λ) and 435% increase in strain sensitivity (dλ/dH) (compared to normally compacted (NC) unsubstituted CoFe2O4 (CFO)) of Zr+4 doped CFO sample, Co1.2Zr0.2Fe1.6O4, prepared by magnetic field assisted compaction, have been reported in this study. Magnetic field assisted compaction (MC) has been employed to process Zr-doped cobalt ferrites, Co1+xZrxFe2−2xO4 (0 ≤ × ≤ 0.4), to further improve the magnetoelastic properties. Saturation magnetization (M S ) and coercivity (H C ) increase from ~426 kA/m and ~4.4 kA/m respectively, for x = 0, to ~552 kA/m and ~7.11 kA/m respectively for x = 0.2. Dramatic increase in λ was observed for MC samples (~ −360 ppm and ~−380 ppm for x = 0 and x = 0.2 respectively) compared to the NC samples (~−181 ppm and ~−185 ppm for x = 0 and x = 0.2 respectively). A remarkable quadruple increase in dλ/dH was observed in Zr-doped (x = 0.2) cobalt-ferrite (~4.3 × 10−9 A−1m) compared to that of unsubstituted cobalt-ferrite (~1.24 × 10−9 A−1m), while a fivefold increase in dλ/dH was observed for magnetically compacted (MC) Zr doped cobalt ferrite (x = 0.2) (~4.3 × 10−9 A−1m) compared to normal compacted (NC) unsubstituted cobalt ferrite (~0.8 × 10−9 A−1m).
format	article
author	Monaji Vinitha Reddy Abdellah Lisfi Sabin Pokharel Dibakar Das
author_facet	Monaji Vinitha Reddy Abdellah Lisfi Sabin Pokharel Dibakar Das
author_sort	Monaji Vinitha Reddy
title	Colossal piezomagnetic response in magnetically pressed Zr+4 substituted cobalt ferrites
title_short	Colossal piezomagnetic response in magnetically pressed Zr+4 substituted cobalt ferrites
title_full	Colossal piezomagnetic response in magnetically pressed Zr+4 substituted cobalt ferrites
title_fullStr	Colossal piezomagnetic response in magnetically pressed Zr+4 substituted cobalt ferrites
title_full_unstemmed	Colossal piezomagnetic response in magnetically pressed Zr+4 substituted cobalt ferrites
title_sort	colossal piezomagnetic response in magnetically pressed zr+4 substituted cobalt ferrites
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/3875f9e3718f4161819d7d41acb065a9
work_keys_str_mv	AT monajivinithareddy colossalpiezomagneticresponseinmagneticallypressedzr4substitutedcobaltferrites AT abdellahlisfi colossalpiezomagneticresponseinmagneticallypressedzr4substitutedcobaltferrites AT sabinpokharel colossalpiezomagneticresponseinmagneticallypressedzr4substitutedcobaltferrites AT dibakardas colossalpiezomagneticresponseinmagneticallypressedzr4substitutedcobaltferrites
_version_	1718394860510117888

Colossal piezomagnetic response in magnetically pressed Zr+4 substituted cobalt ferrites

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