Magnetically correlated internal friction and Young’s modulus in La(Y)-Ca-Mn-O perovskites

Autor:	Liu Changsong, Kebin Li, Xiangfu Nie, Zhengang Zhu, Jiaju Du, Yuheng Zhang, Denglu Hou, J.S. Zhu, Xijun Li
Rok vydání:	1997
Předmět:	Paramagnetism Crystallography symbols.namesake Materials science Condensed matter physics Ferromagnetism Atomic force microscopy Jahn–Teller effect Lattice distortion symbols Young's modulus Internal friction
Zdroj:	Physical Review B. 56:13662-13665
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.56.13662
Popis:	Internal friction (Q{sup {minus}1}) and Young{close_quote}s modulus have been studied on a series of La{sub 1{minus}x}Ca{sub x}MnO{sub 3{minus}{delta}} and La{sub 0.6}Y{sub 0.07}Ca{sub 0.33}MnO{sub 3{minus}{delta}} polycrystals. A Q{sup {minus}1} peak originating from the changes of the magnetic entropy is observed. The Q{sup {minus}1} peak for x in the range of 0{lt}x{lt}0.5 can be correlated with a transition from a paramagnetic (PM) disordered state to a ferromagnetic (FM) ordered state accompanied by a cooperative Jahn-Teller lattice distortion; from a PM insulator to a spin-glass insulator and accompanied with a large loss of modulus for 0.5{lt}x{lt}1.0; and the Q{sup {minus}1} peak is ascribed to a transition from a PM to an AFM insulator for x=1.0. {copyright} {ital 1997} {ital The American Physical Society}
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::82adf641bde4d9055ebe5fdda8aee8c5 https://doi.org/10.1103/physrevb.56.13662 Zobrazit plný text záznamu