Suppression of the ferromagnetic-insulating phase in self-doped La0.94Mn0.98O3 crystals under pressure -: art. no. 054423

被引：33

作者：

Markovich, V ^{[1
]}

Rozenberg, E

Gorodetsky, G

Greenblatt, M

McCarroll, WH

机构：

[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel

[2] Rutgers State Univ, Dept Chem, Piscataway, NJ 08854 USA

[3] Rider Univ, Dept Chem, Lawrenceville, NJ 08648 USA

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.63.054423

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of hydrostatic pressure P on the magnetic and transport properties of self-doped La0.94Mn0.98O3 crystals has been investigated at pressures up to 1 GPa and in the temperature range 15< T<300 K. It was found that the applied pressure enhances the double-exchange coupling, increases the magnetization, and lowers the ferromagnetic-insulator transition temperature. The results obtained here for the self-doped crystals are compared with those observed for lightly doped La1-xSrxMnO3. It is shown that similar mechanisms of ferromagnetic clustering and percolative polarons may account also for the magnetic and transport properties of the self-doped manganites.

引用

页数：4

共 27 条

[1] Magnetic structures of LaMnO3+delta perovskites (delta=0.11, 0.15, 0.26) [J].

Alonso, JA ;

MartinezLope, MJ ;

Casais, MT ;

Munoz, A .

SOLID STATE COMMUNICATIONS, 1997, 102 (01) :7-12

[2] Strong change in spin dynamics close to percolation in La1-xCaxMnO3 [J].

Biotteau, G ;

Moussa, F ;

Hennion, M ;

Rodríguez-Carvajal, J ;

Wildes, A ;

Pinsard, L ;

Revcolevschi, A .

PHYSICA B, 2000, 276 :562-563

[3] Evidence for breakdown of ferromagnetic order below TC in the manganite La0.8Ca0.2MnO3 [J].

Chechersky, V ;

Nath, A ;

Isaac, I ;

Franck, JP ;

Ghosh, K ;

Ju, H ;

Greene, RL .

PHYSICAL REVIEW B, 1999, 59 (01) :497-502

[4]

D'yakonov V. P., 1987, Soviet Physics - Solid State, V29, P1664

[5] Phase diagram of low doping manganites [J].

De Renzi, R ;

Allodi, G ;

Amoretti, G ;

Guidi, MC ;

Fanesi, S ;

Guidi, G ;

Licci, F ;

Caneiro, A ;

Prado, F ;

Sanchez, R ;

Oseroff, S ;

Amato, A .

PHYSICA B, 2000, 289 :85-88

[6] Effects of high vacancy concentrations on the magnetic properties of La1-xMn1-yO3 (0.02≤x, y≤0.13) [J].

de Silva, PSIPN ;

Richards, FM ;

Cohen, LF ;

Alonso, JA ;

Martinez-Lope, MJ ;

Casais, MT ;

Thomas, KA ;

MacManus-Driscoll, JL .

JOURNAL OF APPLIED PHYSICS, 1998, 83 (01) :394-399

[7] Spontaneous behavior and magnetic field and pressure effects on La2/3Ca1/3MnO3 perovskite [J].

DeTeresa, JM ;

Ibarra, MR ;

Blasco, J ;

Garcia, J ;

Marquina, C ;

Algarabel, PA ;

Arnold, Z ;

Kamenev, K ;

Ritter, C ;

vonHelmolt, R .

PHYSICAL REVIEW B, 1996, 54 (02) :1187-1193

[8] Zero-field 139La nuclear magnetic resonance in La1-xCaxMnO3 for 0.125≤x≤0.5 [J].

Dho, J ;

Kim, I ;

Lee, S ;

Kim, KH ;

Lee, HJ ;

Jung, JH ;

Noh, TW .

PHYSICAL REVIEW B, 1999, 59 (01) :492-496

[9] 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

[10]

Gor'kov L. P., 1998, PHYS-USP, V41, P589

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