Interplay of superexchange and orbital degeneracy in Cr-doped LaMnO3 -: art. no. 054414

被引：44

作者：

Deisenhofer, J ^{[1
]}

Paraskevopoulos, M ^{[1
]}

von Nidda, HAK ^{[1
]}

Loidl, A ^{[1
]}

机构：

[1] Univ Augsburg, Inst Phys, D-86159 Augsburg, Germany

来源：

PHYSICAL REVIEW B | 2002年 / 66卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.66.054414

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on structural, magnetic, and electron spin resonance (ESR) investigations in the manganite system LaMn1-xCrxO3 (xless than or equal to0.5). Upon Cr-doping we observe a reduction of the Jahn-Teller distortion yielding less distorted orthorhombic structures. A transition from the Jahn-Teller distorted O-' to the pseudocubic O phase occurs between 0.3<x<0.4. A clear connection between this transition and the doping dependence of the magnetic and ESR properties has been observed. The effective moments determined by ESR seem reduced with respect to the spin-only value of both Mn3+ and Cr3+ ions.

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页码：1 / 7

页数：7

相关论文

共 42 条

[1]

Abragam A., 1970, ELECT PARAMAGNETIC R

[2] Anisotropic ESR linewidth and Jahn-Teller distortions in La7/8Sr1/8MnO3 [J].

Alejandro, G ;

Causa, MT ;

Ramos, CA ;

Tovar, M ;

Fontcuberta, J .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2001, 226 (2002-2003) :2002-2003

[3] NEUTRON DIFFRACTION STUDY OF THE MAGNETIC STRUCTURES FOR THE PEROVSKITE-TYPE MIXED OXIDES LA (MN,CR) O3 [J].

BENTS, UH .

PHYSICAL REVIEW, 1957, 106 (02) :225-230

[4] Magnetization and resistivity in chromium doped manganites [J].

Cabeza, O ;

Long, M ;

Severac, C ;

Bari, MA ;

Muirhead, CM ;

Francesconi, MG ;

Greaves, C .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1999, 11 (12) :2569-2578

[5] High-temperature spin dynamics in CMR manganites: ESR and magnetization [J].

Causa, MT ;

Tovar, M ;

Caneiro, A ;

Prado, F ;

Ibanez, G ;

Ramos, CA ;

Butera, A ;

Alascio, B ;

Obradors, X ;

Pinol, S ;

Rivadulla, F ;

Vazquez-Vazquez, C ;

Lopez-Quintela, MA ;

Rivas, J ;

Tokura, Y ;

Oseroff, SB .

PHYSICAL REVIEW B, 1998, 58 (06) :3233-3239

[6] Jahn-Teller effects on the superexchange interactions in LaMnO3 [J].

Causa, MT ;

Alejandro, G ;

Zysler, R ;

Prado, F ;

Caneiro, A ;

Tovar, M .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 196 :506-508

[7] Crystal field, Dzyaloshinsky-Moriya interaction, and orbital order in La0.95Sr0.05MnO3 probed by ESR -: art. no. 104440 [J].

Deisenhofer, J ;

Eremin, MV ;

Zakharov, DV ;

Ivanshin, VA ;

Eremina, RM ;

von Nidda, HAK ;

Mukhin, AA ;

Balbashov, AM ;

Loidl, A .

PHYSICAL REVIEW B, 2002, 65 (10) :1-6

[8] Transition between two ferromagnetic states driven by orbital ordering in La0.88Sr0.12MnO3 [J].

Endoh, Y ;

Hirota, K ;

Ishihara, S ;

Okamoto, S ;

Murakami, Y ;

Nishizawa, A ;

Fukuda, T ;

Kimura, H ;

Nojiri, H ;

Kaneko, K ;

Maekawa, S .

PHYSICAL REVIEW LETTERS, 1999, 82 (21) :4328-4331

[9] CRYSTALLOGRAPHIC STUDIES OF PEROVSKITE-LIKE COMPOUNDS .3. LA (MX, MN1-X)O3 WITH M= CO, FE AND CR [J].

GILLEO, MA .

ACTA CRYSTALLOGRAPHICA, 1957, 10 (03) :161-166

[10]

Goodenough J. B., 1963, MAGNETISM CHEM BOND

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