Abstract
This letter reports the effect of the A-site doping (2, 4, and 6 mol% Bi and Li) on the piezoresistance phenomenon in La0.8Sr 0.2MnO3 (LSMO) polycrystalline ceramics. The fractional change in resistivity was found to be nominal for Li-modified samples but samples modified with 4 and 6 mol% Bi2O3 exhibited 1.8% and 2.3% fractional change in resistivity [ρo - ρ σ)/ρo] at 19.2 MPa which is significantly higher than that for pure LSMO. The enhancement in piezoresistive phenomenon is attributed to distortion of Mn-O bond due to substitution of smaller ion on to La-site. All the samples showed a sudden increase in resistivity with applied stress in the range of 0.5-2 MPa and the behavior was found to saturate as the magnitude of applied stress increases. Magnetic measurements as a function of field and temperature were conducted to confirm the A-site substitution.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 9841-9844 |
| Number of pages | 4 |
| Journal | Journal of Materials Science |
| Volume | 42 |
| Issue number | 23 |
| DOIs | |
| State | Published - Dec 1 2007 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
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Effect of A-site dopant on the piezoresistive characteristics of La 0.8Sr0.2MnO3 ceramics. / Sharma, Vaneet; Hossu, Maria R.; Lee, Woo Ho; Koymen, Ali R.; Priya, Shashank.
In: Journal of Materials Science, Vol. 42, No. 23, 01.12.2007, p. 9841-9844.Research output: Contribution to journal › Article
TY - JOUR
T1 - Effect of A-site dopant on the piezoresistive characteristics of La 0.8Sr0.2MnO3 ceramics
AU - Sharma, Vaneet
AU - Hossu, Maria R.
AU - Lee, Woo Ho
AU - Koymen, Ali R.
AU - Priya, Shashank
PY - 2007/12/1
Y1 - 2007/12/1
N2 - This letter reports the effect of the A-site doping (2, 4, and 6 mol% Bi and Li) on the piezoresistance phenomenon in La0.8Sr 0.2MnO3 (LSMO) polycrystalline ceramics. The fractional change in resistivity was found to be nominal for Li-modified samples but samples modified with 4 and 6 mol% Bi2O3 exhibited 1.8% and 2.3% fractional change in resistivity [ρo - ρ σ)/ρo] at 19.2 MPa which is significantly higher than that for pure LSMO. The enhancement in piezoresistive phenomenon is attributed to distortion of Mn-O bond due to substitution of smaller ion on to La-site. All the samples showed a sudden increase in resistivity with applied stress in the range of 0.5-2 MPa and the behavior was found to saturate as the magnitude of applied stress increases. Magnetic measurements as a function of field and temperature were conducted to confirm the A-site substitution.
AB - This letter reports the effect of the A-site doping (2, 4, and 6 mol% Bi and Li) on the piezoresistance phenomenon in La0.8Sr 0.2MnO3 (LSMO) polycrystalline ceramics. The fractional change in resistivity was found to be nominal for Li-modified samples but samples modified with 4 and 6 mol% Bi2O3 exhibited 1.8% and 2.3% fractional change in resistivity [ρo - ρ σ)/ρo] at 19.2 MPa which is significantly higher than that for pure LSMO. The enhancement in piezoresistive phenomenon is attributed to distortion of Mn-O bond due to substitution of smaller ion on to La-site. All the samples showed a sudden increase in resistivity with applied stress in the range of 0.5-2 MPa and the behavior was found to saturate as the magnitude of applied stress increases. Magnetic measurements as a function of field and temperature were conducted to confirm the A-site substitution.
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U2 - 10.1007/s10853-007-1904-3
DO - 10.1007/s10853-007-1904-3
M3 - Article
VL - 42
SP - 9841
EP - 9844
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 23
ER -