The effect of Mn-site doping on the magnetotransport properties of CMR manganites: discussion

A. Maignan, F. Damay, A. Barnabé, C. Martin, M. Hervieu, B. Raveau, Thom T.M. Palstra

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Abstract

Doping of the Mn-site in Ln1-yAyMn1-xMxO3 manganites has been extensively investigated. For the manganites exhibiting a Curie temperature (TC) these substitutions depress TC. However, the effect on TC is doping-element dependent. It decreases from dTC/dx = -25 K %-1 for M = Fe down to dTC/dx ∼ 0 K %-1 for M = Cr in the series Sm0.56Sr0.44Mn1-xMxO3. The peculiar role of chromium doping is also shown in the case of the charge-ordered Ln0.5Ca0.5MnO3-substituted manganites that are characterized by low average cationic size on the A-site and cationic size mismatch. For the latter, metal-insulator transitions together with CMR properties are induced by Cr and to a smaller extent by Co and Ni. The hindering of the charge-ordering establishment by these 'impurity effects' is also observed in the case of the two-dimensional manganites La0.5Sr1.5MnO4 and LaSr2Mn2O7. The highest efficiency of Cr among all doping elements may be ascribed to the similar t3 2g electronic configurations of Cr3+ and Mn4+ which allow a double-exchange between the Cr3+ and Mn3+ species.

Original languageEnglish
Pages (from-to)1635-1659
Number of pages25
JournalPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume356
Issue number1742
DOIs
Publication statusPublished - 15 Jul 1998
Externally publishedYes

Fingerprint

Manganites
Galvanomagnetic effects
Doping (additives)
Chemical elements
Charge
Metal-insulator Transition
Chromium
Metal insulator transition
Curie temperature
Impurities
High Efficiency
Substitution
chromium
Substitution reactions
insulators
Electronics
substitutes
impurities
Decrease
Configuration

Keywords

  • Antiferromagnetism
  • Ferromagnetism
  • Insulator-metal
  • Magnetoresistance
  • Manganite
  • Mn-site doping

Cite this

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title = "The effect of Mn-site doping on the magnetotransport properties of CMR manganites: discussion",
abstract = "Doping of the Mn-site in Ln1-yAyMn1-xMxO3 manganites has been extensively investigated. For the manganites exhibiting a Curie temperature (TC) these substitutions depress TC. However, the effect on TC is doping-element dependent. It decreases from dTC/dx = -25 K {\%}-1 for M = Fe down to dTC/dx ∼ 0 K {\%}-1 for M = Cr in the series Sm0.56Sr0.44Mn1-xMxO3. The peculiar role of chromium doping is also shown in the case of the charge-ordered Ln0.5Ca0.5MnO3-substituted manganites that are characterized by low average cationic size on the A-site and cationic size mismatch. For the latter, metal-insulator transitions together with CMR properties are induced by Cr and to a smaller extent by Co and Ni. The hindering of the charge-ordering establishment by these 'impurity effects' is also observed in the case of the two-dimensional manganites La0.5Sr1.5MnO4 and LaSr2Mn2O7. The highest efficiency of Cr among all doping elements may be ascribed to the similar t3 2g electronic configurations of Cr3+ and Mn4+ which allow a double-exchange between the Cr3+ and Mn3+ species.",
keywords = "Antiferromagnetism, Ferromagnetism, Insulator-metal, Magnetoresistance, Manganite, Mn-site doping",
author = "A. Maignan and F. Damay and A. Barnab{\'e} and C. Martin and M. Hervieu and B. Raveau and Palstra, {Thom T.M.}",
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language = "English",
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The effect of Mn-site doping on the magnetotransport properties of CMR manganites: discussion. / Maignan, A.; Damay, F.; Barnabé, A.; Martin, C.; Hervieu, M.; Raveau, B.; Palstra, Thom T.M. .

In: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 356, No. 1742, 15.07.1998, p. 1635-1659.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - The effect of Mn-site doping on the magnetotransport properties of CMR manganites: discussion

AU - Maignan, A.

AU - Damay, F.

AU - Barnabé, A.

AU - Martin, C.

AU - Hervieu, M.

AU - Raveau, B.

AU - Palstra, Thom T.M.

PY - 1998/7/15

Y1 - 1998/7/15

N2 - Doping of the Mn-site in Ln1-yAyMn1-xMxO3 manganites has been extensively investigated. For the manganites exhibiting a Curie temperature (TC) these substitutions depress TC. However, the effect on TC is doping-element dependent. It decreases from dTC/dx = -25 K %-1 for M = Fe down to dTC/dx ∼ 0 K %-1 for M = Cr in the series Sm0.56Sr0.44Mn1-xMxO3. The peculiar role of chromium doping is also shown in the case of the charge-ordered Ln0.5Ca0.5MnO3-substituted manganites that are characterized by low average cationic size on the A-site and cationic size mismatch. For the latter, metal-insulator transitions together with CMR properties are induced by Cr and to a smaller extent by Co and Ni. The hindering of the charge-ordering establishment by these 'impurity effects' is also observed in the case of the two-dimensional manganites La0.5Sr1.5MnO4 and LaSr2Mn2O7. The highest efficiency of Cr among all doping elements may be ascribed to the similar t3 2g electronic configurations of Cr3+ and Mn4+ which allow a double-exchange between the Cr3+ and Mn3+ species.

AB - Doping of the Mn-site in Ln1-yAyMn1-xMxO3 manganites has been extensively investigated. For the manganites exhibiting a Curie temperature (TC) these substitutions depress TC. However, the effect on TC is doping-element dependent. It decreases from dTC/dx = -25 K %-1 for M = Fe down to dTC/dx ∼ 0 K %-1 for M = Cr in the series Sm0.56Sr0.44Mn1-xMxO3. The peculiar role of chromium doping is also shown in the case of the charge-ordered Ln0.5Ca0.5MnO3-substituted manganites that are characterized by low average cationic size on the A-site and cationic size mismatch. For the latter, metal-insulator transitions together with CMR properties are induced by Cr and to a smaller extent by Co and Ni. The hindering of the charge-ordering establishment by these 'impurity effects' is also observed in the case of the two-dimensional manganites La0.5Sr1.5MnO4 and LaSr2Mn2O7. The highest efficiency of Cr among all doping elements may be ascribed to the similar t3 2g electronic configurations of Cr3+ and Mn4+ which allow a double-exchange between the Cr3+ and Mn3+ species.

KW - Antiferromagnetism

KW - Ferromagnetism

KW - Insulator-metal

KW - Magnetoresistance

KW - Manganite

KW - Mn-site doping

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DO - 10.1098/rsta.1998.0239

M3 - Article

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EP - 1659

JO - Philosophical transactions of the Royal Society A- mathematical physical and engineering sciences

JF - Philosophical transactions of the Royal Society A- mathematical physical and engineering sciences

SN - 1364-503X

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