2017
DOI: 10.1088/1361-6463/aa54e7
|View full text |Cite
|
Sign up to set email alerts
|

Structure and transport properties of La1−xSrxMnO3granular ceramics

Abstract: Two granular ceramics were prepared by spark plasma sintering (SPS) at 600–800 °C and classical ceramic sintering (CCS) at 900 °C using molten salt synthesized nanoparticles of the composition La0.53Sr0.47MnO3 and  ≈40 nm size. Extensive study of the structural, magnetic, and electric transport properties showed that the SPS and CCS products essentially retain the two-phase magnetic structure of the starting nanoparticles, which consist of a ferromagnetic (FM) core and an A-type antiferromagnetic (AFM) shell. … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

1
6
0

Year Published

2018
2018
2023
2023

Publication Types

Select...
8
1

Relationship

1
8

Authors

Journals

citations
Cited by 15 publications
(7 citation statements)
references
References 42 publications
1
6
0
Order By: Relevance
“…The obtained values of room temperature resistivity and magnetoresistance are in accepted agreement with previously published data for perovskite phase, with close compositions. The value of MR for nanogranular manganite compounds is expected, as was shown in previously published data, 11,45,48 to increase with the decrease of temperature, which makes the La 0.6 Sr 0.4 MnO 3 sample (prepared in the present work) a good candidate for practical applications related to the magneto-conduction.…”
Section: Resultssupporting
confidence: 84%
“…The obtained values of room temperature resistivity and magnetoresistance are in accepted agreement with previously published data for perovskite phase, with close compositions. The value of MR for nanogranular manganite compounds is expected, as was shown in previously published data, 11,45,48 to increase with the decrease of temperature, which makes the La 0.6 Sr 0.4 MnO 3 sample (prepared in the present work) a good candidate for practical applications related to the magneto-conduction.…”
Section: Resultssupporting
confidence: 84%
“…As a first example of electronic transport and magnetoconductive properties of the present products, the resistivity of the LSMO-SiO 2 (5) composite is given in Figure 4c (insert). Note that the roomtemperature value, 10 5 Ω•cm, is to six orders of magnitude larger than the resistivity of nanogranular La 0.53 Sr 0.47 MnO 3 ceramics prepared by spark plasma sintering of bare molten salt grown nanoparticles [24] and to eight orders of magnitude larger than the intrinsic LSMO resistivity. There is a strong localization toward low temperatures, but the dependence in Arrhenius plot is not linear, indicating a gradual decrease of activation energy with its possible vanishing at lowest temperature.…”
mentioning
confidence: 90%
“…The Langevin function is important in superparamagnetism [50] and nanomagnetism -for instance in the theory of tunnelling magnetoresistance in granular manganites, as the core of nanoparticles is superparamagnetic, see [10], especially eqs. (1)(2)(3)(4)(5), and ferrofluids, where the monodomain nanoparticles may also be super-paramagnetic, see [?…”
Section: Applications Of Direct and Inverse Langevin And Brillouin Fu...mentioning
confidence: 99%
“…The expression of the approximant (156) can be obtained directly using the following code, proposed by Kröger (see ref. (10) in [28]): Evidently, the maximum value of n in this code (here: 30) can be adapted to the specific problem under examination.…”
Section: The Case Of Functions B J (X)mentioning
confidence: 99%