Large low-field magnetoresistance in perovskite-type CaCu3Mn4O12 without double exchange

被引：257
作者：
Zeng, Z
Greenblatt, M
Subramanian, MA
Croft, M
机构：
[1] Rutgers State Univ, Dept Chem, Piscataway, NJ 08854 USA
[2] Dupont Co, Cent Res & Dev, Wilmington, DE 19880 USA
[3] Rutgers State Univ, Dept Phys, Piscataway, NJ 08854 USA
来源：
PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 15期
关键词：
D O I：
10.1103/PhysRevLett.82.3164
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report the observation of large low-field magnetoresistance (MR) behavior in CaCu3Mn4O12 with a perovskite-related (AA'3B4O12) structure. Ca2+Cu32+Mn44+O12 is semiconducting and orders ferromagnetically at 355 K. However, it has neither mixed valency of Mn for double-exchange magnetic interactions, nor Jahn-Teller Mn3+ ions, nor a metal-insulator transition. The MR smoothly increases with decreasing temperature and is -40% at 20 K. The low-field MR response does not show the strong temperature-dependent decay characteristic of the LnMnO(3) perovskite-based systems and appears consistent with,an intergrain-interdomain tunneling origin.
引用
收藏
页码：3164 / 3167
页数：4
相关论文
共 16 条
[1]   FERROMAGNETIC OXIDES [LN3+-CU3]MN4O12 (LN = LA TO LU AND Y) [J].
BOCHU, B ;
JOUBERT, JC ;
COLLOMB, A ;
FERRAND, B ;
SAMARAS, D .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1980, 15-8 (JAN-) :1319-1321
[2]   SYNTHESIS AND CRYSTAL-STRUCTURE OF CACU3MN4O12 - NEW FERROMAGNETIC-PEROVSKITE-LIKE COMPOUND [J].
CHENAVAS, J ;
JOUBERT, JC ;
MAREZIO, M ;
BOCHU, B .
JOURNAL OF SOLID STATE CHEMISTRY, 1975, 14 (01) :25-32
[3]   Systematic Mn D-configuration change in the La1-xCaxMnO3 system: A Mn K-edge SAS study [J].
Croft, M ;
Sills, D ;
Greenblatt, M ;
Lee, C ;
Cheong, SW ;
Ramanujachary, KV ;
Tran, D .
PHYSICAL REVIEW B, 1997, 55 (14) :8726-8732
[4]  
Goodenough J. B., 1963, MAGNETISM CHEM BOND
[5]   Spin-polarized intergrain tunneling in La-2/Sr-3(1)/3MnO3 [J].
Hwang, HY ;
Cheong, SW ;
Ong, NP ;
Batlogg, B .
PHYSICAL REVIEW LETTERS, 1996, 77 (10) :2041-2044
[6]   LARGE MAGNETORESISTANCE IN POLYCRYSTALLINE LA-Y-CA-MN-O [J].
JIN, S ;
OBRYAN, HM ;
TIEFEL, TH ;
MCCORMACK, M ;
RHODES, WW .
APPLIED PHYSICS LETTERS, 1995, 66 (03) :382-384
[7]   THOUSANDFOLD CHANGE IN RESISTIVITY IN MAGNETORESISTIVE LA-CA-MN-O FILMS [J].
JIN, S ;
TIEFEL, TH ;
MCCORMACK, M ;
FASTNACHT, RA ;
RAMESH, R ;
CHEN, LH .
SCIENCE, 1994, 264 (5157) :413-415
[8]   THE LARGE MAGNETORESISTANCE OF LA1-XSRXCOO3 AT LOW-TEMPERATURES [J].
MAHENDIRAN, R ;
RAYCHAUDHURI, AK ;
CHAINANI, A ;
SARMA, DD .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1995, 7 (43) :L561-L565
[9]   Colossal magnetoresistance in Cr-based chalcogenide spinels [J].
Ramirez, AP ;
Cava, RJ ;
Krajewski, J .
NATURE, 1997, 386 (6621) :156-159
[10]  
SHAINER A, 1996, PHYS REV B, V53, P9745
12