Surface nanomagnetism of La2CuO4 particles

被引：2
|
作者：
Yusupov, R. V.
Kabanov, V.
Mihailoviv, D.
Conder, K.
Keller, H.
Mueller, K. A.
机构：
[1] Jozef Stefan Inst, Ljubljana 1000, Slovenia
[2] ETH, Neutron Scattering Lab, CH-5232 Villigen, Switzerland
[3] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2007年 / 460卷 / SPEC. ISS.期
关键词：
cuprates; ferromagnetism; nanoparticles; surface effects;
D O I：
10.1016/j.physc.2007.04.076
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
It is shown that the ferromagnetic anisotropic clusters are formed at the surface of stoichiometric La2CuO4 fine grains. The hysteresis loops and thermomagnetic irreversibility due to these clusters are observed in a wide temperature range 5-350 K. The close similarity of our results to the data on hole-doped cuprates [C. Panagopoulos, M. Majoros, T. Nishizaki, H. Iwasaki, Phys. Rev. Lett. 96 (2006) 047002, and references therein] allows us to propose that the unusual magnetism of the last is the consequence of its intrinsic inhomogeneity. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：801 / 802
页数：2
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