Is this standard?

CO is 51.1/2.33/1.54 over 86 hands
Button is 30.8/6.91/2.18 over 188 hands

PokerStars No-Limit Hold'em, $0.10 BB (8 handed) from (Format: FlopTurnRiver)

MP2 ($12.35)
CO ($8.20)
Button ($19.85)
SB ($11.35)
BB ($11.35)
UTG ($9.60)
Hero ($21.90)
MP1 ($14.85)

Preflop: Hero is UTG+1 with A, J.
1 fold, Hero raises to $0.3, 2 folds, CO calls $0.30, Button calls $0.30, 2 folds.

Flop: ($1.05) A, J, 5 (3 players)
Hero bets $1, CO calls $1, Button calls $1.

Turn: ($4.05) 6 (3 players)
Hero checks, CO bets $1.1, Button calls $1.10, Hero calls $1.10.

River: ($7.35) J (3 players)
Hero checks, CO bets $2.5, Button raises to $6, Hero raises to $13.5, CO calls $3.30 (All-In), Button folds.

Final Pot: $24.75

I am not sure about full ring, but i don't think you should be playing AJo from that early position.
That being said, raise to $0.40 PF. 4xBB should be standard.

I'd struggle to put either of them on AA as well. Definately make sure you make a note of this and I pretty much agree with Red about playing this hand, OOP, 8 handed. If you want to play it, make a bigger raise. All you need is for one donk in EP/MP to call this w/ any two and the odds look very good for a whole bunch of hands in the C/O or OTB. Before you know it, you're playing AJo, OOP in a family pot, not ideal at all.

As played, looks fine, cooler. Like I say, make a note villian plays AA this way.