Electrical Transport — High-κ Samarium-Based Metal-Organic Framework for Gate Dielectric Applications

5 measurement groups · 34 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

AC conductivity from LCR measurements; sigmaAC = A omega^S analysis

Electrical conductivity

compound 1 silver-coated pellet · Pellet

Frequency-dependent conductivity measured at different temperatures; SI Table S2 gives intercept and slope from conductivity vs frequency fits.

Temperature: 10-310
Atmosphere: vacuum (0.1 Pa or 1e-3 Torr)
Geometry: silver-paste coated pellet
Context: pristine framework
Measurement source: p003 / SI page S-3 · Conductivity measurements · Table S2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
AC conductivity at 0.5 MHzMarked as a best value within this paper	1.46 x 10^-5 S/cm (0.5 MHz)	—	—	Text Rounded Reported	p005 / journal page 21876 · 3.5. Electrical Conductivity Measurements · Figure 4b
AC conductivity at 5 kHz	2.15 x 10^-7 S/cm (5 kHz)	—	—	Text Rounded Reported	p005 / journal page 21876 · 3.5. Electrical Conductivity Measurements · Figure 4b
frequency exponent S range from main text	from 0.93 to 0.92	—	—	Text Range	p005 / journal page 21876 · 3.5. Electrical Conductivity Measurements · Table S2; Figure 4
Table S2 intercept at source temperature 10	-10.13648	—	0.2034	SI Table Exact Reported	p003 / SI page S-3 · Conductivity measurements · Table S2
Table S2 intercept at source temperature 100	-10.14883	—	0.02158	SI Table Exact Reported	p003 / SI page S-3 · Conductivity measurements · Table S2
Table S2 intercept at source temperature 150	-10.11748	—	0.01809	SI Table Exact Reported	p003 / SI page S-3 · Conductivity measurements · Table S2
Table S2 intercept at source temperature 200	-10.03423	—	0.02189	SI Table Exact Reported	p003 / SI page S-3 · Conductivity measurements · Table S2
Table S2 intercept at source temperature 250	-10.03369	—	0.0088	SI Table Exact Reported	p003 / SI page S-3 · Conductivity measurements · Table S2
Table S2 intercept at source temperature 300	-10.05385	—	0.01584	SI Table Exact Reported	p003 / SI page S-3 · Conductivity measurements · Table S2
Table S2 intercept at source temperature 50	-10.18503	—	0.02116	SI Table Exact Reported	p003 / SI page S-3 · Conductivity measurements · Table S2
Table S2 slope at source temperature 10	0.92787	—	0.00411	SI Table Exact Reported	p003 / SI page S-3 · Conductivity measurements · Table S2
Table S2 slope at source temperature 100	0.93124	—	0.00436	SI Table Exact Reported	p003 / SI page S-3 · Conductivity measurements · Table S2
Table S2 slope at source temperature 150	0.92459	—	0.00366	SI Table Exact Reported	p003 / SI page S-3 · Conductivity measurements · Table S2
Table S2 slope at source temperature 200	0.91246	—	0.00443	SI Table Exact Reported	p003 / SI page S-3 · Conductivity measurements · Table S2
Table S2 slope at source temperature 250	0.91636	—	0.00178	SI Table Exact Reported	p003 / SI page S-3 · Conductivity measurements · Table S2
Table S2 slope at source temperature 300	0.92475	—	0.0032	SI Table Exact Reported	p003 / SI page S-3 · Conductivity measurements · Table S2
Table S2 slope at source temperature 50	0.93861	—	0.00428	SI Table Exact Reported	p003 / SI page S-3 · Conductivity measurements · Table S2

Dielectric measurement of dehydrated compound 1 after annealing at 200 deg C

dehydrated compound 1' pellet/sample · Pellet

SI Figures S6-S7 give temperature-dependent permittivity and dielectric loss for dehydrated Sm-MOF-1 at several frequencies.

Temperature: 10-310
Geometry: pellet geometry inferred from main electrical methods
Context: dehydrated pristine framework
Measurement source: p006-p007 / SI pages S-6 to S-7 · Figures S6 and S7 · Figure S6; Figure S7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
dehydrated compound 1' dielectric constant	kappa = 27.6 at 310 K and 0.2 MHz	—	—	Text Exact Reported	p004 / journal page 21875 · 3.4. Dielectric Investigation · Figures S6 and S7
dehydrated compound 1' dielectric loss	tan delta = 0.024 at 310 K and 0.2 MHz	—	—	Text Exact Reported	p004 / journal page 21875 · 3.4. Dielectric Investigation · Figures S6 and S7
dehydrated 5 kHz permittivity near 310 K from SI figure	approximately 29.3 at 310 K and 5 kHz	—	—	Figure Axis Approximate	p006 / SI page S-6 · Figure S6 · Figure S6

Dielectric permittivity and dielectric loss with Agilent HP-4284A LCR meter and Lakeshore temperature controller

compound 1 silver-coated pellet · Pellet

Frequency range 20 Hz-1 MHz; temperature range 10-310 K; vacuum 0.1 Pa or 1e-3 Torr; silver-paste coated circular pellets.

Temperature: 10-310
Atmosphere: vacuum (0.1 Pa or 1e-3 Torr)
Geometry: circular pellet, diameter about 0.6 cm, thickness 0.04-0.08 cm, both sides coated with silver paste
Context: hydrated pristine framework
Measurement source: p002 / journal page 21873 · 2.1. Materials and Methods · Figure 3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
relative permittivity at 10 K and 5 kHz	kappa = 41.9 at 10 K (5 kHz)	—	—	Text Exact Reported	p003 / journal page 21874 · 3.4. Dielectric Investigation · Figure 3a
relative permittivity at 300 K and 0.2 MHz	42.3 at 0.2 MHz and 300 K	—	—	Text Exact Reported	p003 / journal page 21874 · 3.4. Dielectric Investigation · Figure 3b
relative permittivity / dielectric constant at 310 K and 5 kHzMarked as a best value within this paper	kappa = 45.1 at 310 K (5 kHz)	—	—	Text Exact Reported	p003 / journal page 21874 · 3.4. Dielectric Investigation · Figure 3a
dielectric loss at 310 K and 0.2 MHz	tan delta = 0.023 at 0.2 MHz and 310 K	—	—	Text Exact Reported	p004 / journal page 21875 · 3.4. Dielectric Investigation · Figure 3c

Impedance spectroscopy fitted with two series equivalent circuits, each R parallel CPE

Impedance spectroscopy

compound 1 silver-coated pellet · Pellet

Frequency-dependent impedance at room temperature; SI Table S3 gives R1, CPE1, R2, CPE2 fitting values.

Temperature: room temperature
Geometry: pellet/electrode geometry; sigma = d/RA used for conductivity
Context: pristine framework
Measurement source: p005 / journal page 21876 · 3.6. Impedance Behavior · Figure 5; Table S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
capacitance from impedance curve	0.44 pF at room temperature	—	—	Text Exact Reported	p005 / journal page 21876 · 3.6. Impedance Behavior · Figure 5a
conductivity calculated from impedance resistance	2.83 x 10^-6 S/cm	—	—	Calculated From Reported Rounded Reported	p005 / journal page 21876 · 3.6. Impedance Behavior · Figure 5a
impedance frequency trend	impedance drops with increasing frequency	—	—	Qualitative Qualitative	p005 / journal page 21876 · 3.6. Impedance Behavior · Figure 5b
resistance from impedance fitting in main text	1 x 10^5 Ohm	—	—	Text Rounded Reported	p005 / journal page 21876 · 3.6. Impedance Behavior · Figure 5a
Table S3 equivalent circuit CPE1	CPE1 = 1.5565e-12	—	—	SI Table Exact Reported	p003 / SI page S-3 · Table S3 · Table S3
Table S3 equivalent circuit CPE2	CPE2 = 1.5319e-10	—	—	SI Table Exact Reported	p003 / SI page S-3 · Table S3 · Table S3
Table S3 equivalent circuit R1	R1 = 9.5937e+09	—	—	SI Table Exact Reported	p003 / SI page S-3 · Table S3 · Table S3
Table S3 equivalent circuit R2	R2 = 6e+05	—	—	SI Table Exact Reported	p003 / SI page S-3 · Table S3 · Table S3

Leakage current density versus applied voltage in metal-insulator-metal configuration

compound 1 silver-coated pellet · Pellet

Both sides of a compound 1 pellet coated with silver electrodes; measured under ambient conditions.

Temperature: ambient
Atmosphere: ambient
Geometry: Ag/Sm-MOF/Ag MIM pellet
Context: pristine framework
Measurement source: p005 / journal page 21876 · 3.7. Leakage Current Measurement · Figure 6

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
leakage current density at 0 VMarked as a best value within this paper	8.13 x 10^-12 A mm^-2 at 0 V	—	—	Text Exact Reported	p005 / journal page 21876 · 3.7. Leakage Current Measurement · Figure 6b
leakage current density over +/-5 V from figure	approximately 3e-10 to 4e-10 A/mm2 at +/-5 V	—	—	Figure Axis Approximate	p005 / journal page 21876 · Figure 6b · Figure 6b