Influence of oxygen isotope exchange on the ground state of manganites

V. N. Smolyaninova; Amlan Biswas; P. Fournier; S. Lofland; X. Zhang; Guo Meng Zhao; R. L. Greene

Influence of oxygen isotope exchange on the ground state of manganites

V. N. Smolyaninova, Amlan Biswas, P. Fournier, S. Lofland, X. Zhang, Guo Meng Zhao, R. L. Greene

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

Abstract

We report a study of oxygen isotope effects on the low-temperature specific heat, magnetization, and resistivity of La_1-xCa_xMnO₃ and (La_1-yPr_y)_0.67Ca_0.33 MnO₃. For metallic compositions of La_1-xCa_xMnO₃ and for charge-ordered La_0.5Ca_0.5MnO₃ no change in the low-temperature specific heat has been detected with ¹⁶O-¹⁸O exchange, while compounds of (La_1-yPr_y)_0.67Ca_0.33 MnO₃ (0.4<y<0.6) show a significant change in low-temperature properties. The low-temperature specific heat indicates the presence of a charge-ordered phase even in compositions of (La_1-yPr_y)_0.67Ca_0.33 MnO₃ which are metallic at low temperatures. We suggest that the changes induced by the oxygen isotope exchange are caused by an increase of the charge-ordered phase in ¹⁸O samples.

Original language	English (US)
Article number	104419
Pages (from-to)	1044191-1044199
Number of pages	9
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	10
State	Published - Mar 1 2002
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

@article{9d798bb9d009427aaa10894ad74d5d24,

title = "Influence of oxygen isotope exchange on the ground state of manganites",

abstract = "We report a study of oxygen isotope effects on the low-temperature specific heat, magnetization, and resistivity of La1-xCaxMnO3 and (La1-yPry)0.67Ca0.33 MnO3. For metallic compositions of La1-xCaxMnO3 and for charge-ordered La0.5Ca0.5MnO3 no change in the low-temperature specific heat has been detected with 16O-18O exchange, while compounds of (La1-yPry)0.67Ca0.33 MnO3 (0.41-yPry)0.67Ca0.33 MnO3 which are metallic at low temperatures. We suggest that the changes induced by the oxygen isotope exchange are caused by an increase of the charge-ordered phase in 18O samples.",

author = "Smolyaninova, {V. N.} and Amlan Biswas and P. Fournier and S. Lofland and X. Zhang and Zhao, {Guo Meng} and Greene, {R. L.}",

year = "2002",

month = mar,

day = "1",

language = "English (US)",

volume = "65",

pages = "1044191--1044199",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "0163-1829",

publisher = "American Physical Society",

number = "10",

}

TY - JOUR

T1 - Influence of oxygen isotope exchange on the ground state of manganites

AU - Smolyaninova, V. N.

AU - Biswas, Amlan

AU - Fournier, P.

AU - Lofland, S.

AU - Zhang, X.

AU - Zhao, Guo Meng

AU - Greene, R. L.

PY - 2002/3/1

Y1 - 2002/3/1

N2 - We report a study of oxygen isotope effects on the low-temperature specific heat, magnetization, and resistivity of La1-xCaxMnO3 and (La1-yPry)0.67Ca0.33 MnO3. For metallic compositions of La1-xCaxMnO3 and for charge-ordered La0.5Ca0.5MnO3 no change in the low-temperature specific heat has been detected with 16O-18O exchange, while compounds of (La1-yPry)0.67Ca0.33 MnO3 (0.41-yPry)0.67Ca0.33 MnO3 which are metallic at low temperatures. We suggest that the changes induced by the oxygen isotope exchange are caused by an increase of the charge-ordered phase in 18O samples.

AB - We report a study of oxygen isotope effects on the low-temperature specific heat, magnetization, and resistivity of La1-xCaxMnO3 and (La1-yPry)0.67Ca0.33 MnO3. For metallic compositions of La1-xCaxMnO3 and for charge-ordered La0.5Ca0.5MnO3 no change in the low-temperature specific heat has been detected with 16O-18O exchange, while compounds of (La1-yPry)0.67Ca0.33 MnO3 (0.41-yPry)0.67Ca0.33 MnO3 which are metallic at low temperatures. We suggest that the changes induced by the oxygen isotope exchange are caused by an increase of the charge-ordered phase in 18O samples.

UR - http://www.scopus.com/inward/record.url?scp=0001118661&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001118661&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0001118661

SN - 0163-1829

VL - 65

SP - 1044191

EP - 1044199

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 10

M1 - 104419

ER -

Influence of oxygen isotope exchange on the ground state of manganites

Abstract

All Science Journal Classification (ASJC) codes

Other files and links

Fingerprint

Cite this