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Title: Specific heat of La[sub 1. 2]Sr[sub 1. 8]Mn[sub 2]O[sub 7]

Abstract

The specific heat of a single crystal of the layered perovskite La[sub 1.2]Sr[sub 1.8]Mn[sub 2]O[sub 7] has been measured for 83[lt]T[lt]290 hthinsp;K. A high, narrow peak associated with the ferromagnetic ordering of the Mn[sup 3+]-Mn[sup 4+] ions is observed to have a maximum at T[sub c]=115.57 hthinsp;K, in agreement with magnetization, neutron scattering, and resistivity measurements. A second, hysteretic, peak at 260 K is also observed. An estimate is made of the substantial magnetic entropy removed by cooling the crystal from 290 K to T[sub c]. [copyright] [ital 1999] [ital The American Physical Society]

Authors:
 [1]; ; ; ;  [2]
  1. (Department of Physics, Amherst College, Amherst, Massachusetts 01002 (United States))
  2. (Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States))
Publication Date:
OSTI Identifier:
6440164
Alternate Identifier(s):
OSTI ID: 6440164
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter
Additional Journal Information:
Journal Volume: 60:9; Journal ID: ISSN 0163-1829
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COOLING; ENTROPY; FERROMAGNETIC MATERIALS; HYSTERESIS; LANTHANUM COMPOUNDS; LANTHANUM OXIDES; MAGNETIZATION; MANGANESE OXIDES; SPECIFIC HEAT; STRONTIUM COMPOUNDS; STRONTIUM OXIDES; TEMPERATURE RANGE 0065-0273 K; TEMPERATURE RANGE 0273-0400 K; ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; MAGNETIC MATERIALS; MANGANESE COMPOUNDS; MATERIALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS 360204* -- Ceramics, Cermets, & Refractories-- Physical Properties

Citation Formats

Gordon, J.E., Bader, S.D., Mitchell, J.F., Osborn, R., and Rosenkranz, S. Specific heat of La[sub 1. 2]Sr[sub 1. 8]Mn[sub 2]O[sub 7]. United States: N. p., 1999. Web. doi:10.1103/PhysRevB.60.6258.
Gordon, J.E., Bader, S.D., Mitchell, J.F., Osborn, R., & Rosenkranz, S. Specific heat of La[sub 1. 2]Sr[sub 1. 8]Mn[sub 2]O[sub 7]. United States. doi:10.1103/PhysRevB.60.6258.
Gordon, J.E., Bader, S.D., Mitchell, J.F., Osborn, R., and Rosenkranz, S. Wed . "Specific heat of La[sub 1. 2]Sr[sub 1. 8]Mn[sub 2]O[sub 7]". United States. doi:10.1103/PhysRevB.60.6258.
@article{osti_6440164,
title = {Specific heat of La[sub 1. 2]Sr[sub 1. 8]Mn[sub 2]O[sub 7]},
author = {Gordon, J.E. and Bader, S.D. and Mitchell, J.F. and Osborn, R. and Rosenkranz, S.},
abstractNote = {The specific heat of a single crystal of the layered perovskite La[sub 1.2]Sr[sub 1.8]Mn[sub 2]O[sub 7] has been measured for 83[lt]T[lt]290 hthinsp;K. A high, narrow peak associated with the ferromagnetic ordering of the Mn[sup 3+]-Mn[sup 4+] ions is observed to have a maximum at T[sub c]=115.57 hthinsp;K, in agreement with magnetization, neutron scattering, and resistivity measurements. A second, hysteretic, peak at 260 K is also observed. An estimate is made of the substantial magnetic entropy removed by cooling the crystal from 290 K to T[sub c]. [copyright] [ital 1999] [ital The American Physical Society]},
doi = {10.1103/PhysRevB.60.6258},
journal = {Physical Review, B: Condensed Matter},
issn = {0163-1829},
number = ,
volume = 60:9,
place = {United States},
year = {1999},
month = {9}
}