[R] tick marks on fold change versus fold change plot

[Alla Bulashevska]

Dear R users,
i try to produce the fold change versus fold change plot
where i have the values for x and y ranging from 0.01 to
100. So i start with
plot(x,y,xlim=c(0.01,100),ylim=c(0.01,100), axes=F).
Then i would like both axes to have tick marks as 
c(0.01,0.1,1,10,100) but they should appear equidistant.
How should i manage this?
Thank you for your help,
Alla.