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

doi:10.1098/rsta.1998.0239

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

^*Corresponding author for this work

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

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Abstract

Doping of the Mn-site in Ln_1-yA_yMn_1-xM_xO₃ manganites has been extensively investigated. For the manganites exhibiting a Curie temperature (T_C) these substitutions depress T_C. However, the effect on T_C is doping-element dependent. It decreases from dT_C/dx = -25 K %^-1 for M = Fe down to dT_C/dx ∼ 0 K %^-1 for M = Cr in the series Sm^0.56Sr_0.44Mn_1-xM_xO₃. The peculiar role of chromium doping is also shown in the case of the charge-ordered Ln_0.5Ca_0.5MnO₃-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 La_0.5Sr_1.5MnO₄ 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 language	English
Pages (from-to)	1635-1659
Number of pages	25
Journal	Philosophical Transactions of the Royal Society of London A. Mathematical, Physical and Engineering Sciences
Volume	356
Issue number	1742
DOIs	https://doi.org/10.1098/rsta.1998.0239
Publication status	Published - 15 Jul 1998
Externally published	Yes

Keywords

Antiferromagnetism
Ferromagnetism
Insulator-metal
Magnetoresistance
Manganite
Mn-site doping

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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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The effect of Mn-site doping on the magnetotransport properties of CMR manganites: discussion. / Maignan, A.; Damay, F.; Barnabé, A. et al.
In: Philosophical Transactions of the Royal Society of London A. Mathematical, Physical and Engineering Sciences, Vol. 356, No. 1742, 15.07.1998, p. 1635-1659.

Research output: Contribution to journal › Article › Academic › peer-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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JF - Philosophical Transactions of the Royal Society of London A. Mathematical, Physical and Engineering Sciences

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ER -

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

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